The VDO HC 12.6 is a wired cyclecomputer with a wireless heart rate monitor that will help you make the most of your time on the bike. Stable, accurate and reliable. current speed average speed max speed trip odometer total odometer wheel size 1 total odometer wheel size 2 ride time clock speed comparator (current to average) navigator trip mileage second programmable trip counter current heart rate stop watch time in zone time below zone time above zone