- Universal compatibility: Works with most exercise bikes that have a headphone jack, covering a wide range of popular brands available on Amazon and in the domestic market. A practical accessory for home workouts. - Easy installation: Connects via 3.5 mm female jacks located on the back of the monitor, enabling a straightforward setup to track speed and heart rate. Note: adapters (not included) may be required for certain models with female jacks. - Optional heart rate monitoring: Supports bikes equipped with pulse sensors on the handlebars for heart rate feedback during workouts. Some models may require re-wiring for optimal performance. - Battery requirement: Requires 2 x AAA batteries (not included due to Amazon’s hazardous materials guidelines). Use fresh batteries to ensure uninterrupted use. - Use scenarios: - You ride a compatible bike and want audio playback while monitoring speed and heart rate. - You train with handlebars pulse sensors to monitor heart rate zones; some models may need re-wiring. - You use an older bike model without modern connectivity by leveraging the monitor’s headphone jack for enhanced functionality.