The Bryton Rider 21 easily integrates into your rides to provide you with key data and information about your workout. Equipped with GPS, the Rider 21 is able to record your laps, tracks, speed, distance and calories burned, with this information you can tailor your workouts to achieve your goals.Features:High-sensitivity GPS2.4 GHz ANT+ Wireless interfaceBarometric altimeterAltitude / Slope / TempertureAlertsCompatible with ANT+ speed and cadence sensors (Sold Separately)Anti-glare display for daytime and clear backlight for night ridesIncludes: bike mount, USB cable