VDO Z3 Altimeter Heart Rate Monitor and Cycle Computer Introducing the new VDO Z-Series Altimeters! The Z3 is a cycle computer with integrated heart rate monitoring, altimeter, cadence, calorie consumption, power measurement (WATT), fully digital wireless transmission for speed and cadence. All VDO computers are backed by a Five Year Warranty. Current Speed.... 

VDO Z3 PC Link Altimeter Heart Rate Monitor and Cycle Computer with PC Syncing Cable and Training Analysis Software Introducing the new VDO Z-Series Altimeters! The Z3 PC-Link is a cycle computer with integrated heart rate monitoring, altimeter, cadence, calorie consumption, power measurement (WATT), data storage, PC-interface, fully digital wireless transmission... 

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...