1. Precise positioning: GPS automatic timing, built-in 5 meters high-precision GPS chip, Beidou GPS Glonass fast global positioning to set the time zone.2. Large-screen display: 1.7-inch full-screen anti-glare LCD display, full-screen backlight, data can be clearly seen during the day and night.3. Real-time data riding: M3 is an entry-level GPS bicycle computer that supports 9 key riding data displays to master riding status. ...4. Waterproof IPX5: High waterproof level, supports riding in the rain, but do not immerse in water.5. Super battery life: 400mah rechargeable battery, Micro USB interface charging, large battery capacity, measured battery life is not less than 8 hours.Specifications:: MeilanColor: white; red; blackMaterial: Acrylic, ABSUse battery type: 400mah rechargeable batteryCharging port: micor USBCharging time: 2-3 hoursLife time: 8 hoursFeatures: GPS positioning, 8 hours battery life, USB rechargeable, IPX5 waterproof, backlight level-1, altitudeWaterproof rating: IPX5Product accessories: USB charging cable + rubber band + bicycle stand + user manualScreen size: 1.7 inchesProduct size: 7.5*5*7.5cmProduct weight: 105gPackage Included:1* code meter 1* bracket 2* strap 1* instruction 1*USB cable