The BC 1106 DTS with its diversity of functions is the right choice for the athletically ambitious biker. DTS stands for digital transmission system, which provides zero cross talk with other computers. The integrated storage chip prevents loss of pre-settings and total values during battery change, which is announced in due time by the low battery indicator. Two wheel size settings are possible, which can be recognized automatically with an optional “BIKE 2 transmitter”. With the wireless receiver integrated into the bike computer, it can be mounted on your stem or bars.

Buy/More Info

Sigma BC1106DTS Wireless Computer is a post from: Cycling Computers Reviews

A post from: Projectors for Home Theater

The BC 1706 HR with DTS is the perfect solution for all fitness-oriented cyclists. In addition to the trusted BC 1606L DTS bike and time functions the BC 1706 HR also measures heart rate. The current, maximum and average heart rate are measured as precisely as an ECG for precise training control. Both the speed and heart rate are coded and transferred to the BC by radio waves (digital and coded). All bike, time and heart rate values are easily and clearly read from the 3-line display. Low battery indicator – on-time battery change reminder. Integrated storage chip – pre-settings and total values are retained during battery change. Active mode without total values – total values faded while riding to enable better focusing on the necessary functions. Bike 2 Sensor – total values faded while riding to enable better focusing on the necessary functions. Backlight – optimal readability even after nightfall. Water resistant.

User Ratings and Reviews

5 Stars Nice little device for a novice user.
This is the first bike computer I ever bought or used. The instructions are not the best. There are a lot of illustrations (pictures), but no worded instructions on the physical installation. It lacked specific details, but the pictures were pretty much self explanatory, so it wasn’t too bad. Then I followed the setup instructions, which were much better (worded instructions w/pictures). I noticed the display was acting a little “whacky”, and the backlight didn’t work. The characters would be jumbled up when switching modes. After a while of this, I found it to be a weak battery. I changed the battery and everything worked like a charm! It has a lot of functions, and so far they all seem very accurate. Nice little device!

1 Star Wasted money
This thing simply does not work. I wish I had gone ahead and spent more money and gotten something useful.

5 Stars very good product
This is the best HR monitor for my bike riding I have ever had. I have owned three or four over the years of a different brand.

Thank you

Buy/More Info

SIGMA BC1706HR DTS Wireless Bicycle Speedometer With Heart Rate Monitor is a post from: Cycling Computers Reviews

A post from: Projectors for Home Theater

The BC 1606L provides a better overview of the essential information during a ride by hiding the total accumulated functions and cadence if not installed. The backlight gives optimal readability of this information even in the dark. An integrated storage chip prevents the loss of set values during battery change as features such trip section counter, timer, and second wheel size are programmable. Dot Matrix display – clearer display through full text indication between values. Active mode without total values – total values faded while riding to enable better focusing on the necessary functions. Backlight – optimal readability even after nightfall.

User Ratings and Reviews

4 Stars REAL NICE!
i did some research befor buying just any computer. i have a Specialized Hardrock Comp Disc mountain bike. it has a heavy duty frame thats made of thick squared tubing. because of this it was alittle hard to insatll the magnets and have them read properly due to the distance, they need to be pretty close. but im a clever dude and rigged it up perfect. not sure if the MPH is accurate yet but i will have that tested soon also. they cadence feature is cool too. it measures your pedal RPM, for some its worth having for road use but off road its just another extra sometimes used. so, the degree of difficulty of self install was the only reason i gave this product a 4 which is more like a 4.5 out of 5. well worth the money. buy it and have a pro install it if you can and tell them you got it as a gift. they get all testy when you dont buy there over priced models

3 Stars Good Value
The only thing I have to compare this to is a cheapy $8 one I had from Kmart many years ago. This Sigma 1606L has many more features including cadence which I use often. The data it collects per trip ( average speed, average cadence, max speed, trip time, trip distance) is saved so I can transfer it to a spreadsheet to track how I’m doing. It’s easy to remove from it’s base using a bayonet style attachment, which I have placed on the handlebar stem. I was not impressed when I saw how the parts mount to the bike, thin rubber O-rings loop around sensor and fork, or baseplate and stem to stay in place, but after 1000 miles on streets and bike paths everything has held together. It always shows current speed plus any other selected single feature, like cadence or time.

Why only 3 stars?

1) Lacks a scan feature, so I must push a button repeatedly to get to view the function I want. An auto scan feature would allow me to keep my hands on the grips where they belong.

2) The wiring is somewhat flimsy. Small gauge wire is subject to breaking if put under any stress.

3) Speed readout shows only the closest half mile interval, doesn’t show tenths. For example, it reads either 12.0 MPH or 12.5 MPH missing 12.1, 12.2,etc.

I am actually very happy with this nicely designed and low cost unit. Mine came with a second mounting for a second bike, data for which it tracks separately. After 8 months of use over many miles, it has served me well.

5 Stars Been using sigma for 7+ years…
I’ve used the Sigma 1600L and its predecessor the 1600. Sigma makes a great computer in the 1600 series. They keep track of two bikes wheels (thus two bikes) as well as two odometers and a combined odometer. Its great if you have two bikes because all you need is an extra mount and you are set. the cadence feature is an easy add-on, and not available in most computers at this prices. It has all the regular stuff… like actual and average speed, trip computers, etc.

5 Stars Great Unit!!!!!!!
I not only use this on my bicycle but adapted it to my motorcycle! Yep- it works great for that too! Easy to use, reliable, easy to read, easy to install. I would recommend it to anyone.

4 Stars Good Value, Easy to Use
Like the product…easy to read screen. Easy to go through the different functions. Easy to install.

Light works well but I wish it stayed on longer…(only for 3 seconds I believe). The buttons aren’t labeled at all so you have to get use to what button works for what.

Buy/More Info

SIGMA BC1606L 16 Function Topline Wired Bicycle Speedometer is a post from: Cycling Computers Reviews

A post from: Projectors for Home Theater

Sigma Sport’s BC 1606L Wireless Computer with Cadence is the top model for riders who demand precision from each turn of the crank. This version of the BC 1606L DTS wireless succeeds in this not only by providing a better overview of the essential information during a ride by hiding the total accumulated functions in lieu of specific data points, but through its backlit readout that delivers optimal readability of information even in the dark. In addition, an integrated storage chip prevents the loss of set values during battery change as features such trip section counter, timer, and second wheel size are programmable. The set is equipped with a digital radio sensor with the receiver integrated into the bike computer. But the thing that sets this unit apart is the simultaneous transmission of speed data from the front wheel and cadence data from the turning on the cranks. Comparing these two the handlebar mounted computer is able to output more accurate data that is crucial to the training schedule of serious riders.

Digital Transmission explained.

A peek inside the BC1606L Cadence DTS’ box.

Digital Transmission System (DTS) Explained
With 2-channel radio transmission (km/h and pedal frequency) and 100% digital encoding without data loss, the DTS system guarantees 100% data security of current speed and pedal frequency values during wireless reception. It does this by calculating all relevant data, encoding it and transmitting it in data packets to the integrated receiver in the bike computer. Disturbances such as power lines or mobile phones are no longer a problem as transmission is carried out over the so-called low frequency. A double security system also ensures that only the data packets from your own transmitter are evaluated by the receiver. This means that group rides are no problem.

A further security measure is redundant data transmission so that no data can be lost. The size and quality of the receiver has also been optimized by a specially developed Sigma chip (ASIC) and integrated into the bike computer which also saves on battery life.

General Functions:

• Wireless transmission of 100% digitally coded data segments
• 7 language settings, Dot matrix LCD readout, watertight design
• LCD backlight
• Low battery indicator
• Backup function/through saving chip
• Two wheel sizes adjustable
• Clock and model name in standby

Bike Functions:

• Actual speed
• Average speed
• Comparison of actual and average speed
• Maximum speed
• Trip distance
• Programmable trip section counter
• Total distance bike 1
• Total distance bike 2
• Total distance bikes 1+2
• Actual cadence
• Average cadence

Time Functions:

• Clock
• Stop watch
• Riding time
• Total riding time bike 1
• Total riding time bike 2
• Total riding time bikes 1+2
• Programmable time meter (countdown timer)

What’s in the Box?
BC 1606L DTS bicycle computer with built in sensor, DTS speed transmitter, power magnet, DTS cadence transmitter, cadence magnet, twist-lock handlebar mount, 3-volt CR2032 lithium battery, 42mm O-ring, 32mm O-ring, plastic ties

Manufacturer’s Warranty
Five-year warranty on defective parts or products.

About Sigma Sport
Sigma Sport represents German technology at its highest level, combining innovative design with precision engineering. Sigma tests all their products in their in-house laboratories to withstand the harshest conditions, ensuring quality continually throughout production. All Sigma Sport standard lights conform to the stringent German traffic standard, and all Sigma Sport products are CE-approved.

User Ratings and Reviews

1 Star Great Design, But Performance is Challenging
I bought this based upon bike store recommendation after having 3 Cateye’s fail in the past 3 years. Installation was very easy once I figured it out (the manual is only marginally helpful). I really like the display – very easy to read for those of us over 40. The O’rings do not hold the speed and cadence sensors very secure – they tend to move out of alignment while going over bumps. I trashed the cadence sensor when it slipped into the spokes after going over a bump during a ride. The speed sensor periodically cuts out, then restarts after a minute or 2. Overall, I am dissapointed.

1 Star The bad reviews are true
Well, you get what you pay for.

After reading the reviews and seeing how this is supposed to be mounted I made extra sure to get an industrial strength double sided tape and mounted the unit.

It lasted 3 rides, then I hit a bump and the unit flew of my bike, after it hit my spokes.

Do not purchase this product.

1 Star Invest in something better – this doesn’t last!
I was looking for a wireless computer with cadence, an easy to read display and easy to use while riding. This did pretty well at first. I got “blank outs” on speed and distance every few miles, but they didn’t last more than a minute or so. The computer then “guesses” at the distance missed and your distance suddenly increases. This adds up over time to an inaccurate reading on a long ride. I was slightly irritated with this quality, but lived with it. Now 7 months after I got it, it’s got a mind of it’s own. It works perfectly for a while, and then can’t find the speed or distance (but can do cadence!) So on a 20 mile ride I’ll come home with it reading 4.8 miles. (Yes, I’ve replaced the batteries, no change.) The odometer reads 35,182 (that happened after I passed the 1,000 mile mark). It’s so irritating and frustrating now, that I just use it as a clock and will be looking for a longer lasting replacement. You get what you pay for. Invest wisely.

3 Stars Problems getting started! Save $ and aggro and go with a Cat Eye
I purchased this computer despite the negative reviews and got bit. Installation is relatively simple for anyone who can change a battery, but the instructions are horrific, diagrams only and very unorganized. Installed the cadence transmitter, speed / spoke magnet and computer in a few minutes, but I had difficulty getting the speed sensor to align on my Cinelli’s ovalized fork and the magnet to stay secure on my bladed spokes. It just never appeared to sit well on the fork, so I used double sided foam tape and heavier zip ties than those provided and epoxyed the magnet to the spoke.

I experienced the same “battery” issues (2 DOA) and installed 4 fresh batteries so I wouldn’t have to mess with it later. I also had a real problem with a defective speed sensor, which necessitated a return. The customer service rep was friendly, helpful, recognized that the manual s&%$ed and sent anew sensor and revised(?) manual diagram for the speed sensor install within 2 days. I guess you get what you pay for! Thoma59

5 Stars Just Great
For the price is amazing !!! Work excelent. About the moutain system shoud be better. But in overall work fantastic.

Buy/More Info

SIGMA BC1606L CADENCE DTS Double Wireless Bicycle Speedometer is a post from: Cycling Computers Reviews

A post from: Projectors for Home Theater

The BC 1106 with its diversity of functions is the right choice for the athletically ambitious biker. The integrated storage chip prevents loss of pre-settings and total values during battery change, which is announced in due time by the low battery indicator. Two wheel size settings are possible, which can be recognized automatically with an optional “BIKE 2 transmitter”. The set is equipped with a digital radio sensor. The receiver is integrated into the bike computer. Low battery indicator – on-time battery change reminder. Integrated storage chip – pre-settings and total values are retained during battery change. Active mode without total values – total values faded while riding to enable better focusing on the necessary functions. Bike 2 Sensor – total values faded while riding to enable better focusing on the necessary functions. Backlight – optimal readability even after nightfall. Water resistant.

User Ratings and Reviews

2 Stars Not weatherproof
At the begining this product was working perfectly, to my surprise because this computures usually give you a hard time. This was until I went to to a trial with losts of water and lots of rain, and some water must have gotten into the trasnmiter, because it wont work anymore. The display turns on fine, but wont receive any signal. I believe, these wireless computers are not worth it, for this reason. It worked fine about 3 or 4 times. Lost my money.

5 Stars Great Computer
Easy set up and directions and great functionality. No problems what-so-ever picking up the wireless signal.

2 Stars Not very good, Blackburn is better
This one actually made me truly appreciate my Blackburn Delphi 4.0, even for all its own issues, it was so much better than this one. This one takes forever to sync after going to sleep and sometimes never does, almost always have to hit a button to wake it up. I’ve tried adjusting the sensor distance and gap, that’s not the issue. What is really awful is the accuracy and slow pace of updates. This reads ONLY IN .5 MPH INCREMENTS! That means accuracy is +/- .5 mph or AS MUCH AS A FULL 1 MPH! Furthermore, updates seem to be infrequent, as is obvious when braking. I’ll be at a dead stop for 3-4 seconds before it reads 0 mph. If you are a cyclist who seriously uses a cyclometer for feedback, this one is useless. There is no good way to tell if the gear change or extra effort you just put in are getting you any acceleration… things that are almost intuitive with the Blackburn, which reads to .1 mph and seems to update real-time. Oh, and those godawful rubber bands for mounting… Sure they are easy… until you screw up and one goes flying never to be seen again… And when you are done, the head unit swivels around the handlebars requiring adjustment constantly. This is really only a good cyclometer for casual users and kids. I would never recommend it to anyone who has a serious need for real-time and accurate performance feedback. I will be buying a Blackburn Delphi again soon. Even if it dies again after a year (note, a year for me is 8000-10000 miles, so expect yours to last longer), it’s a better deal because it does the job I need. This one is just a waste of handlebar space.

Buy/More Info

SIGMA BC1106 DTS Wireless Bicycle Speedometer is a post from: Cycling Computers Reviews

A post from: Projectors for Home Theater

Sigma’s top model…the BC 1606L DTS wireless provides a better overview of the essential information during a ride by hiding the total accumulated functions and cadence if not installed. The backlight gives optimal readability of this information even in the dark. An integrated storage chip prevents the loss of set values during battery change as features such trip section counter, timer, and second wheel size are programmable. Equipped with a digital radio sensor. The receiver is integrated into the bike computer. Low battery indicator – on-time battery change reminder. Integrated storage chip – pre-settings and total values are retained during battery change. Active mode without total values – total values faded while riding to enable better focusing on the necessary functions. Bike 2 Sensor – total values faded while riding to enable better focusing on the necessary functions. Backlight – optimal readability even after nightfall. Water resistant.

User Ratings and Reviews

1 Star difficult
almost impossible to attach the front fork sensor, I would not reccommend this otherwise excellent product for the new carbon road bikes.

4 Stars Good enough but not the best
The first Sigma I got from Amazon seemed like refurbished. Its buttons were not ok, the counters were not in zero, the protection film was not in the correct place. Amazon replaced it promptly with another one that seems like new.

Installation was a breeze. Very easy and quick. Menu buttons are easy to use too. I bought the cadence kit and it works great with this computer. There are a few things that could be improved:

1) On some occasions the computer shows 0 speed though you are moving (and fast) and then it resumes showing the correct speed. I checked the distance between the magnets and also with the computer and things are correct. I adjusted distances and now the problem seldom occurs but it still happens.

2) Watch out! This product does not include the cadence kit. I must have misread the product descriptions since I missed that and ended up buying it separately. Still with Amazon’s best price I ended up paying a very good deal.

3) Speed is always displayed at the top and you can only change what is displayed at the bottom. This is not of a big deal to me but it could be to you.

Bottom line: I recommend this product considering its price, features and quality.

3 Stars Not Bad….. Using it for a Motorcycle Speedo…………..
I decided to purchase one of these for an alterative to my stardard MPH and milage guage for my motorcycle. I finally got the space and connections correct and it seems to work. A front motorcycle tire is a bit odd, compaired to a bicycle tire – size and travel. The speed has been off about 5-9 MPH slow and I will need to mess around with the tire size setup to dial it in. Should not be a problem………

But…… for milege, trip odometer, clock, light and other calculations, this unit should work close enough for what I’m looking for. I’m glad they sell replacment parts (sensors, etc) here for this bike computer !!

4 Stars Strange engineering – but effective
I have to admit to smiling at some of the comments about mounting the sensors on this computer. The O-ring mounting system is a bit odd. I think wire-ties would be more effective, but I mounted a Trek wireless for my gf and it had it’s problems too, so I’m not sure I’ve seen a really well done mounting system yet. I would like to see a system where the mount and the sensor are separate, like my ToPeak seat bag or my tail light. Then lots of sticky, gooey, rubber stuff and zip ties to squeeze the gooey rubber stuff into the EXACT shape of the fork & chain-stay. I like the cadence zip-tie mount better than the speed sensor O-ring mount, but if you mount the speed sensor on a road bike on the left side it works perfectly. (always mount a sensor on the down-side of the wheel spin so if your wheel ingests a stick it will not pull your sensor into the wheel, ruin it and send you flying over the handle bars)

I have a mountain bike and I think this could be mounted successfully on a shocked fork, just drive down the the auto parts store and shell out $2 for an assortment of O-rings. Destroying the device because you can’t think outside the box enough to see the mounting gear wasn’t intended for the gargantuan forks of a mountain bike is pretty sorry. You could also just take the 2 O-rings supplied, put one on each side of the sensor and zip-tie them together on the back side. If you can’t think your way through a simple problem like this please stay away from carbon bikes which have torque specs all over the place that are at very close tolerances. (use Krytox pure Teflon grease to prevent spalling on things like seat-post clamps and seat adjustment screws – or your torque feel will be waaaaay off)

My only beef with this computer is I wish the buttons were marked as I tend to forget which buttons I need to push to reset everything from my last trip and end up trying to read the display in Polish or inadvertently turn off the cadence sensor. There are 4 buttons, M1, M2, S, R… wouldn’t kill them to mark the face or offer an optional flange that is marked. I’d like to see them ditch the button names and just use button colors instead. Simple, effective, no-brainer. Oh, the sensors are very attractive, and have very large (and long-lasting?) batteries, but especially the cadence sensor is HUGE!

I bought the computer and speed sensor for $60 and tax at REI, and spent $16 here and shipping to get the cadence sensor, so this is a great price.(REI sells the cadence capable 1606L, but doesn’t sell the cadence sensor – stupid and annoying!) All in, it cost me about $85 and took a week to get the whole system together, but I needed the speed part bad enough I paid the price. Ouch!!! (When your riding partner is also a bike mechanic you have to go along with his RX once and awhile or find another riding partner! ) Relative to the Trek sensors, Sigma’s magnets are waaaaaay better. All in all it is a very well made system, I just think the mounting could be done better.

UPDATE: 5/2/2008

I am remounting the cadence sensor using O-rings. The rubber O-rings grip the frame a lot better than any hard plastic zip-tie, and thereby hold the sensors in place much more effectively.

UPDATE II: 5/19/2008

I have now ridden 2 centuries with this and done a few dozen training rides and am developing a love-hate relationship with it. When it works, it’s awesome, but, on the first century when I was trying to pace myself to catch up to my riding partner, the speed stopped displaying. On the century this weekend the cadence sensor stopped displaying (synch problem I assume)after a rest stop. Tired, and bucking strong headwinds is exactly when I need a cadence count. This kind of flaky performance is NOT, NOT, NOT acceptable and must be fixed.

On the other hand, it’s very accurate, it survived a training ride crash with flying colors, and familiar now with the controls and operation I appreciate a lot of the small things – like the lower right button being used to step through the kind of data needed during a ride. When mounted on the right side of the handlebar stem this means you can still grip the handlebar firmly with your right hand and step through the data displays with just your thumb pressing forward. Aside from a fix for the infuriating lack of reliability, a nice feature that could be easily added would be crank rotations per ride calculated as average cadence times number of minutes, or the actual count of cadence triggers. This would be exactly analogous to steps on a pedometer. I have not used this device at night – yet. Can this device’s firmware be updated? If not, why not?

Finally, I remounted the cadence sensor with the O-ring AND a single zip tie. I worry about twisting out of my pedals and knocking the sensor off with my heel. I also worry about it growing legs and walking off when I’m not looking. It’s requires a bit of finesse to use both mounting systems together, but didn’t budge in a 20mph crash.

UPDATE III: 6/9/2008

I changed the battery in the main unit and all of the flaky errors seem to have disappeared. These batteries are pretty cheap so I wish Sigma would just ship the computer without the batteries and cut the price $5. I had a problem with the speed sensor getting out of position relative to its trigger. I don’t know if the sensor slipped down the fork on a sheen of Carnuba wax or if my mechanic moved the trigger on the spoke when he trued the wheels. In either case, if the speed indicator is acting up, keep this simple check in mind.

I’d really like way-points on my computer so I can record the time and distance to significant points on my training rides – like how far to the next water and bathroom. Right now I have about 20 way-points I build rides out of by mixing and matching. It would be a lot easier to do this if I could press a button and say “record all my ride stats at this point”. Temp would be nice too, but I have that function in a cheap Casio watch, so not really missing that much.

UPDATE IV: 8/3/2008

Quite unexpectedly, I’ve now found a use for MINIMUM speed. I built a gear chart in Excel that gives gear ratios and speed based on average cadence. (another great use of the average cadence number this computer provides – in addition to torque * cadence to compute power output) So what low gears do I need for the kind of climbs I’ve started doing? Ummm, I don’t know exactly because I don’t have minimum speed or cadence. If I had minimum speed I could use a target cadence and compute the required gearing. As a general rule, if it CAN be calculated, then please do so. Somebody is going to find a good use for it.

UPDATE V: 9/9/2008

Down-shifting early, and spinning out the approach to a short hill, I glanced at the computer and got a cadence of 102 after having slowed down a bit. What was my max cadence for the ride? Who knows. One more thing this could easily accumulate and display (oh for the lack of a few 16 bit registers…sigh). Cadence, both max and min, matter a lot when working to optimize your gearing and shifting. This would be at least as useful as the up and down arrow display to indicate whether you are above or below average speed – which is only meaningful if you are riding on flat terrain. Such an arrow would be a lot more useful for cadence, which should be fairly constant no matter the terrain, or wind.

1 Star Not for mountain bikes with front shocks
I bought this product in a real store which is entirely independent of Amazon. I decided to write this review just to save others the trouble I had.

This is obviously designed for road bikes without consideration for mountain bikes. Maybe I should have known, but the package didn’t say I *couldn’t* use it for my mountain bike.

The first problem I had was rotating part of the computer mount 90 degrees by unscrewing very small screws with no tool included for doing so. Luckily I had a screwdriver that was small enough (they’re about the size of glasses screws.)

The second problem, and the deciding factor by far, was installation of the sensor. The sensor is to be held on by a thick O-ring which the installer must first fit into one part of the sensor, then pull around the fork and hook into the other end of the sensor. The first problem with this was that I had to pull back a piece of padding on the sensor to even access the slot to put the ring into. When pulling it back, the padding tore off entirely because it was only hot-glued on and there was no real bond to the case. It fit back on and the pressure of the case against the fork was enough to hold it in place, so I proceeded. Next, the O-ring was entirely too thick for the slot provided. I had to stretch it so much that I thought it was going to snap, and even then I had to poke it into the slot with a screwdriver. Not easy to do when one hand is holding the case and part of the ring and the other is stretching the hell out of the ring. That went in finally, and I put the dislocated padding back on.

Upon trying to wrap the O-ring around the fork, I found that it took considerable force to stretch it. So much so that I couldn’t mount the sensor facing the right direction because I couldn’t get enough leverage if I did. At some point I was impressed at how strong the sensor was since it looked so cheap. That didn’t last long. I heard a little bit of cracking, but I had to rotate the case about 180 degrees so that it was oriented correctly. I heard a lot more cracking as I rotated it. I finally took the sensor off and tried to mount it facing the right way so that I wouldn’t have to rotate it. By now the ring was very stretched out, but just as I got it attached to the second slot (which required a finger to put the top part in and a hex wrench to pry the other end in) the entire case split in half. By “split in half” I mean that I was looking right at the *back* of the battery on one half and the bottom of the PC board on the other half. I thought about super gluing it back together for half a second, but then thought that doing so would prevent me from getting my money back.

I’m sure this is a great computer, but you’re probably better off with a wired sensor that requires bolting on. I say this even if you have a road bike with thin forks because the case + installation system has a major flaw which causes the two poorly-bonded sides of the sensor case to be pulled directly apart. In fact, if I *wanted* to break the case open for some reason, I would choose the two points where the O-ring attaches and would pry it apart. The O-ring does essentially that, so it’s only a matter of time before the sensor splits on *any* bike.

Buy/More Info

SIGMA BC1606L DTS Wireless Bicycle Speedometer is a post from: Cycling Computers Reviews

A post from: Projectors for Home Theater