Your personal training coach for multi-sport athletes, the Garmin Forerunner measures sport specific metrics powered by an extremely accurate Garmin Elevate wrist based heart rate monitor. You will get your easy-to-read, real-time results displayed on the high resolution 128px display. Have more fun working out by using the built-in training modes for running and biking and help keep your training regime fresh and enjoyable.  Lightweight and very powerful the Forerunner 35 measures your heart rate 24/7 and gives you vibration alerts when it\'s time to get moving.Lightweight GPS multi-sport watch for tracking training dataGarmin Elevate wrist heart rate monitorComplete data support for multi-sport modesAdditional monitor support provided by the heart rate strap (not included)Smart notifications - stay connected without interrupting your flowGPS + GLONLASS enabled - pin point triangulationShare and compete with other likeminded athletes through Garmin ConnectWater resistant: Up to 50mBattery life: up to 9 days, watch mode; up to 13 hours in training modeConnectivity: Ant+, Bluetooth Smart, USB