USB Ports Used For Charging The Phone Real-time Battery Power Show Clearly And Accurately Color Full LCD Display & Waterproof SPEED, MAX SPEED, SPEED(Real-time). Total Kilometer/Mile Distance , Time ,Speed and PAS Level Indicator Speed display:/MAX/REAL TIME SPEED Battery Indicator:Reliable battery indicator 9-level Assist:3/5/9 optional Mileage indicator:ODO/TIRP/CLOCK/TIME USB charging port:5V/500mA Backlight:5 Levers Walking mode:6KM Brake Signal:On Display Headlight/backlight:On/Off Temperature:suitable for low temperature Max -20degrees Celsius Screen:High-contrast 3.2 inch IPS colorful screen Button:Ergonomic external button design easy to operate Distance Display:Kilometer/ Mile, Can be set according to your habits. Mileage Indicator:Odometer/Trip distance/ Clock/ Riding time Power Indicator:Real time power indicator , digital or analog or Current Software Upgraded:Software can be upgraded through UART Other:Error code indicator Note: Do not plug in or unplug this display when the power to the unit is on. Avoid collisions. Protect the display's membrane to provide water resistant performance. Do not attempt to reset parameters if the display is not working. Installation: Install the display and button control on the handlebar and adjust its location. Plug it into the controller with power off. Colour: Material:plastic Package Contents: 1 * Colorful Screen Display P850C Speedometer 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.