and high quality. Compatible with most exercise spin bikes that use a headphone jack connection. Fits stationary bikes from brands such as Sunny, PooBoo, L-Now, Snode, Exerpeutic, Pleny, Yosuda, Ativafit, Faafuu, and many other domestic and international models. Speedometer and pulse tracking connections are made via 3.5 mm female jacks on the back of the monitor. Adapters may be required if your bike has female jacks (rare). Optional heart rate monitoring feature compatible with bikes equipped with built-in pulse sensors (typically two metal contact points on the handlebars). Rewiring may be necessary for certain models. Includes 2 x AAA batteries. Color: Black Material: Plastic Package Contents: 1 x Exercise Bike Computer Note: Only the items listed above are included. Other accessories or products shown are not part of the package. Light reflection and differences in display settings may cause slight variations between the color of the item in the photo and the actual product. Measurement error allowance is +/- 1-3 cm.