and high quality. Compatible with most exercise bikes using a headphone jack connection. Fits stationary bikes from brands such as Sunny, L-Now, Pleny, and Faafuu. Compatible with 90% of home fitness bikes. Both speedometer and pulse tracking connections are made through 3.5 mm female jacks on the back of the monitor. Adapters may be required if the device has female jacks (rare cases). Optional heart rate monitoring feature works with bikes equipped with pulse sensors, typically two metal contact points on the handlebars. Rewiring may be necessary for certain models. Powered by 2 x AAA batteries (included). Color: Black Material: Plastic Package Contents: 1 x Exercise Bike Computer Note: The package includes only the items listed above. Other products are not included. Light reflection and differences in display screens may cause slight variations in the color of the item shown in the picture compared to the actual product. Measurement error allowance is +/- 1-3 cm.