Extremely long battery life of 28 hours: strong battery life, meet long-term outdoor use, no frequent charging trouble Accurate satellite time adjustment: support multiple satellite positioning, automatic time calibration, be sure accurate and reliable data 2.4-inch high-definition large screen: equipped with a 2.4-inch display, data reading is clear and intuitive, and viewing is more convenient Backlight always-on design: adjustable backlight and support always-on mode, still clearly visible at night or in dark environments Simple and portable: simple installation, wireless design, GPS speed measurement, eliminating the trouble of wiring (note that it can only be used where there is a GPS signal) Specifications: Product Name: Bicycle Wireless Computer GPS Speedometer and Odometer Material: ABS Size: .83*50*20mm Color: Black Package Content: Package Contents: 1 x Bicycle Wireless Computer 1xUSB cable 1 set of accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.