VDO M5 & M6 - Heart Rate and Cadence Kit Includes cadence transmitter, battery, magnet, mounting hardware and instructions. The odometer WL M5 and M6 W Cadence Kit includes Sensor data transmission is done with WL system. This KIT IS THE Heart Rate and Cadence Kit for the VDO M5 and M6 bicycle computers ONLY. Get more from your VDO M5 or M6 bike computer with this wireless cadence sensor. Suitable for outdoor use and Designed for easy usage.