4 satellites positional systems: BEIDOU, GPS, GLONASS, GALILEO ensure accurate position and trace.1.8in large LCD screen with automatic backlight.IPX7 allows you to ride in all weather conditions.Track and display speed, distance, track, altitude, trip time and multiple data in data instantly.Supports third party apps,compactible with XOSS, Strava and Training Peaks, so you can easily share your rides with your friends.Built-in 500mAh rechargeable lithium battery, about 24-25 hours batter life after 2-3 hours full charged.With a built-in barometer, you'll know how high you've ridden on the longest climbs or on your way through the city.Easy to install onto the handlebar with the mount and O-rings provided.Screen: 1.8in LCDAPP: Compatible with XOSS, Strava and Training PeaksBattery: 1 x 3.7V 500mAh rechargeable lithium batteryBattery life: 24-25 hoursCharging time: 2-3 hoursWaterproof rating: IPX7Size: 7.5 x 4.8 x 1.9cm/ 2.9 x 1.8 x 0.7inPackage weight: Approx. 150gProducts from He Wei's store