Monitor Speedometer with Heart Rate for Fitness Stationary Bikes Magnetic Bike Function description of magnetic control car instrument, spinning bike instrument:_x000D_ 1. TIME: Press the MODE button to display the time. This value represents the total time from the start of the movement to ._x000D_ 2. SPEED: Press the MODE key to display the speed. This value represents the speed of the current movement._x000D_ 3. DISTANCE: Press the MODE key to display the distance. This value represents the total distance from the start to of the movement._x000D_ 4. CALORIE: Press 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)._x000D_ [Compatible with Most Indoor Exercise Bikes] - for Stationary Bikes with "head phone " look connection tips. E.g. many bike models by Sunny, , L-Now, , , Pleny, , , Faafuu - 95% of Amazon as well as domestic [Heart Rate Monitoring Feature]that works with bikes with pulse sensors (usually 2 x metal pieces on handle bars). Re-wiring MIGHT be required for some perticular models._x000D_ [2 x AAA Batteries Not Included - Required]Batteries are NOT included._x000D_ Product size: 108x163mm_x000D_ LCD size: 48x23mm_x000D_ Colour: white_x000D_ Material: plastic Package Contents:_x000D_ 1 * Monitor Speedometer W/ Heart Rate Only the above package content, other products are not included._x000D_ Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_