high quality. [Most Exercise Spin Bikes use this monit] - f Stationary Bikes with "head phone jack" look connection tips. E.g. by f bikes Sunny, , L-Now, , , Pleny, , , Faafuu - 90 percent of Amazon as well as domestic Both speedometer and pulse trakcing connection are through 3.5 mm female jacks on the back the monit - adapters (NOT INCLUDED) might be needed if the device also happen to have FEMALE jacks (rare cases) [Optional Heart Rate Moniting Feature]An optional feature that wks with bikes with pulse senss (usually 2 x metal pieces on hle bars). Re-wiring MIGHT be required f some perticular models. 2 x AAA Batteries Included Colour: Black material: plastic Package Contents: 1 x Exercise Bike Computer Only the above package content, other products are not included. Note: Light reflection different displays may cause the col of the item in the picture a little different from the real thing. The measurement allowed err is 1-3cm.