The Polar M460 has integrated GPS, tracks your heart rate & altitude. With Training Peaks & Strava. As seen on Bike Channel. The polar m460 comes with advanced power meter compatibility. Integrated gps, barometer & gps based gradient and heart rate via chest sensor. 3rd party compatible-strava, training peaks & 3p power meters. Also features strava live segments. Complete Bluetooth smart sensor compatibility. User selectable training views. New h10 sensor with improved accuracy. Includes fitness & orthostatic tests. Size H6.5, W4.5, . Weight 0.05kg. Manufacturers 2 year guarantee.