Garmin Edge 550 GPS Cycling ComputerThe Edge 550 is a compact GPS cycling computer that uses a bright, color display and physical buttons to give you all the insights, guidance, and fueling advice you need to perform at your best. To access some of the more advanced training and performance features, you'll need to use a compatible heart rate monitor, a power meter, or both. VIVID COLOR DISPLAY SHOWS MAPS AND STATS IN STUNNING DETAIL UP TO 12 HOURS OF BATTERY LIFE IN DEMANDING USE CASES