Multi-functional cycling computer will track cycling data like current/maximum/average speed, trip distance, altitude, cadence, power, heart rate, temperature and so on. And 2.9'' LCD large screen provide clear and crisp reading, enjoy your pleasant cycling trip with it~ Features: 2.9'' large LCD screen for clear and crisp reading during cycling. Imported GPS chip, faster and more accurate position and trace. Track and display speed, time, distance, track, altitude, trip time and multiple data in data instantly. Built-in thermometer and barometer. Support ANT+ peripheral connection: Speed, cadence, heart rate, power. Connect with smart phone via BT 4.0 to sync and analyze data. IPX6 water resistant body allows for rainy day riding. Built-in 1100mAh lithium battery, endurance time is more than 30 hours. Easy to install onto the handlebar with the mount and O-rings provided. 21 Functions: LAP: Circle MPH: Miles per hour KMH: km per hour M: Meter KM: Kilometer FT: Feet MI: Mile MAX: Maximum speed NOW: Current speed AVG: Average speed AST: Ascent ODO: Odograph DST: Trip distance ALT: Altitude GRA: Gradient Backlight Temperature Time ANT speed sensor Heart rate Cadence Power Specification: Screen: 2.9'' LCD Memory: About 150 hours Endurance time: 30-35 hours Charging time: 3.5 hours System: BT 4.0 Peripheral protocol: ANT+ ANT+ connection: Speed, cadence, heart rate, power Waterproof rating: IPX6 Weight: 79g / 2.7oz Size: 9 * 5.3 * 2cm / 3.5 * 2.0 * 0.7in Package weight: 129g / 4.5oz Package List: 1 * Smart Bike Computer 1 * USB Cable 1 * Mounting 1 * Rubber Pad 3 * Rubber Ring