Description:    2.5" HD screen of bicycle computer makes you easy to read with LCD display with auto-backlight.  800mAh rechargeable lithium battery provides up to 25 hours runtime, give you a better cycling experience. IPX5 waterproof protection allows bike computer work normally in rainning day.  Bicycle computer contains speedometer and odometer functions, it helps you ride scientifically and effectively. Current speed, Current cycling time, Current cycling distance; Average speed, Altitude, Slope; Maximum speed, Current clock, Total mileage.  Not only positions accurately the location of your riding. but also records the riding track automatically.  Smart cycling computer supports working with heart rate monitor & cadence sensor device, which presents more professional riding data.       Specifications:   Item name: Bike Computer   Size: 4.9x9.1.3cm   Waterproof level: IPX5   Backlight: 3 modes for day & night   Support: Wireless bluetooth 4.0   Screen: 2.5inch HD   Mount: 2 Ways/ handlebar & stem   Rechargeable: 800mAh battery   Compatibility: Speed/Candence Sensor, Heart rate monitor(not included)       Note:    - There might be little error of size for manual measurement.   - The colors deviation might differ due to different monitor settings, please kindly understand.     Packing list  Package includes:   1 x Bike Computer