VDO Z Series Cycling Computer Heart Rate Transmitter and Strap Have a spare transmitter on hand in your car or gym kit or throw the elastic strap in the wash with your jersey and shorts so they are clean you are never without! VDO’s Z Series offers the latest high frequency, digitally coded technology available so that much more of your ride data can... 

VDO Z Series Cycling Computer Wireless Cadence Kit Monitor your current, average and maximum cadence to optimize pedalling efficiency and follow interval training procedures used by the top pros. Enables power measurement on Z1, Z3 and Z3PC – the simplest and best value form of power measurement available. No wires to mess with, no expensive bottom brancket...