Odometer for Wheel 1, Odometer for Wheel 2. Total distance (combined odometer for both wheelsets). Freeze Frame function. C 15+ is wireless (12v transmitter)

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Trip Distance 2, Dual wheel programmable, Auto/Manual Stopwatch, Average Speed, Maximum Speed, Pace Arrow, Hands Free Auto, Scroll through functions. Patented Twist-Click mounting (all models) Current Speed, Trip Distance, Total Odometer, Elapsed Ride Time, Clock, One Button Operation, Auto Start/Stop (all models). C05+ (uses 12v transmitter, strongest signal available. Easy to read 3-line display Current, Average, and Max Heart Rate Programmable HR Limits Time In, Below, and Above Limits Acoustic Signal for limits Stopwatch, Auto and Manual Service Interval indicator