4 satellite positioning systems: BeiDou, GPS, GLONASS, GALILEO ensure accurate positioning and tracking. Large 1.8" LCD screen with automatic backlight. IPX7 lets you ride in all weather conditions. Instantly tracks and displays speed, distance, track, altitude, trip time and more data. Supports third-party apps, compatible with XOSS, Strava and Training Peaks, so you can easily share your riding experience with friends. Built-in 500mAh rechargeable lithium battery, can be used for about 24-25 hours after a full charge of 2-3 hours. With the built-in barometer, you can know how high you climbed during the longest climb or on the way through the city. Easily mounts on the handlebars with the included bracket and O-ring. Screen: 1.8 inch LCD APP: Compatible with XOSS, Strava and Training Peaks Battery: 1 x 3.7V 500mAh rechargeable lithium battery Battery life: 24-25 hours Charging time: 2-3 hours Waterproof rating: IPX7 Dimensions: 7.5 x 4.8 x 1.9 cm / 2.9 x 1.8 x 0.7 in Package weight: approx. 150 g