Function description of magnetically controlled car instrument, rotating bicycle instrument: 1. TIME: Press the MODE button to display the time. This value represents the total time from the start of the movement to its end. 2. SPEED: Press the MODE button to display the speed. This value represents the speed of the current movement. 3. DISTANCE: Press the MODE button to display the distance. This value represents the total distance from the start to the end of the movement. 4. CALORIE: Press the MODE button to display the calories. This value represents the total energy burned from start to finish. Works for HeadPhone-Look cables] The speedometer and pulse tracking connection is via 3.5mm female jacks on the back of the monitor - adapters (NOT INCLUDED) may be required if the device also has FEMALE jacks (rare cases). [Compatible with most indoor exercise bikes] - for stationary bikes with "phone jack" connection tips. For example. many bike models from Sunny, , L-Now, , , Pleny, , ,