Features： 1、2.9\u0027\u0027 large LCD screen for clear and crisp reading during Cycle. 2、Imported GPS chip, faster and more accurate position and trace. 3、Track and display speed, time, distance, track, altitude, trip time and multiple data in data instantly. 4、Built-in thermometer and barometer. 5、Support ANT+ peripheral connection: Speed, cadence, heart rate, power. 6、Connect with smart phone via BT 4.0 to sync and analyze data. 7、IPX6 water resistant body allows for rainy day riding. 8、Built-in 1100mAh lithium battery, endurance time is more than 30 hours. 9、Easy to install onto the handlebar with the mount and O-rings provided. Specification： Functions:  LAP: Circle   MPH: Miles per hour  KMH: km per hour  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 Water resistant rating: IPX6  Weight: 88g / 3.1oz  Size: 9 * 5.3 * 2cm / 3.5 * 2.0 * 0.7in  Package weight: 149g / 5.3oz Package List： 1 * Smart Bike Computer  1 * USB Cable  1 * Mounting  1 * Rubber Pad  3 * Rubber Ring