High quality. Most exercise spin bikes use this monitor for stationary bikes with a headphone jack-style connection. Compatible with bikes such as Sunny, L-Now, Pleny, and Faafuu. 90% of home-use models have both speedometer and pulse tracking connections via 3.5 mm female jacks on the back of the monitor. Adapters (not included) may be required if the device has female jacks (rare cases). [Optional Heart Rate Monitoring Feature] An optional feature that works with bikes equipped with pulse sensors (typically two metal contact points on the handlebars). Rewiring might be required for certain models. 2 x AAA batteries included. Color: Black Material: Plastic Package Contents: 1 x Exercise Bike Computer Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item to appear slightly different from the actual product. Measurement allows an error of +/- 1-3 cm.