Featuring the Schwinn brand Americans have trusted for over one hundred years this bicycle computer mounts directly onto the frame of the bicycle, providing the rider a clear view of all speed and distance measurements. Featuring a no friction and no contact design, this computer measures the amount of turns by the wheel to provide an accurate calculation without the need to touch or interfere with the performance of the wheel. No messy wires to work with or try and conceal. The sensor, transmitter and receptor unit blend seamlessly on most bicycles. PTI Sports products are designed with safety as the first and foremost concern and are constructed of high quality parts and materials to prevent degradation over time. Thoroughly tested, our products last through years of use before they are recommended for replacement, ensuring safe cycling for years to come.