Function description of magnetic control car instrument, bike instrument: 1. TIME: the MODE button to display the time. This value represents the total time from the start of the movement to . 2. SPEED: the MODE key to display the speed. This value represents the speed of the current movement. 3. DISTANCE: the MODE key to display the distance. This value represents the total distance from the start to of the movement. 4. CALORIE: the MODE button to display the calories. This value represents the total energy burned from the start to . Works for HeadPhone-Look Cables]Both speedometer & pulse trakcing connection are through 3.5 mm female jacks on the back the monitor - adapters (NOT INCLUDED) might be needed if the device also happen to have FEMALE jacks (rare cases). [Compatible with Most Indoor Exercise Bikes] - for Stationary Bikes with "head phone jack" look connection tips. E.g. many bike models by Sunny, , L-Now, , , Pleny, , , Faafuu - 95% of as well as domestic [Heart Rate