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Ciclosport CM4.2 HR Blackline ComputerThe CM 4.2 is the perfect attender for the ambitious cyclist on ample tours. Due to the TwoInOne system it is possible to use two different wheel circumferences. The CM 4.2 there-fore can be used for two bikes and be upgraded with optional cadence reading and heart rate monitor Features: Handlebar bracketWrist band (for jogging computer use)Spoke magnet and mounting materialCockpit MutilockFat Fork CompatibleTwist ClickWireless Bike Functions: Speed (current/average/maximum) Speed comparisons Trip kilometers Programmable total kilometers Trip/total time TwoInOne system Auto start/stop Additional Features: Time (12/24 h) Date PowerDown-Mode Heart rate functions (current/average/maximum) Buy Ciclosport Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.