Item Type: Electric Bicycle Display Panel Weight: 297g/10.5oz Product Material: ABS Suitable for Handlebar Installation: 22.2mm diameter handlebar Instrument Function Description: Display function, speed display, power gear display, power indicator, fault prompt, total mileage, single mileage, headlight display USB Charging Port: 5V Package List 1 x Display Panel 1 x Instruction Manual 4 x Gasket 3 x Screw 3 x Nut The product is communication protocol No. 2. It must be used with the controller of communication protocol No. 2; otherwise, it is incompatible 1Excellent Grade Material: Adopts excellent grade ABS material, light, strong and durable, fine workmanship, with toughness, to provide better protection for the internal circuit, make it more durable. 2Built in Intelligent Chip: Integrated gear switching, real time cycling data at a glance, backlight design, day and night can be seen clearly, making travel more convenient. 3High Definition Display Panel: HD LCD display panel accurately displays power, speed and mileage, allowing you to better control the running of the bike. 4Waterproof Design: Fearless of sudden rainy day, does not affect your rainy day travel, but not for a long time in the rain, do a nice job of maintenance can have a longer service life. 5Support Models : Mounting diameter 22.2mm, suitable for electric bicycles, electric scooters, is their perfect accessories, to meet the installation needs of different models.