Function: 1. USB Charging: There is a non-obvious USB port on the back that can be output to charge your phone. 2. Applies to model: Suitable for KUGOO M4 electric scooters, providing a more comfortable riding experience. 3. Display function: easy to understand the basic condition of the electric scooter, including speed, gear, power, mode, indicator light, etc. 4. Easy to install and use: Please note that the 6-pin waterproof connector can be connected to the controller for display function. 5. Excellent workmanship: made of ABS material, more durable, provide good strength and water resistance and better protection. Specification: Item Type: TF‑100 Display Color: as shown in the pictures Material: ABS Voltage: 48 V Weight: about 126 g/4,4 oz Connector Type: 6-pin waterproof connector Suitable steering wheel: diameter: approx. 22.2mm/0.9in Size: approx. 125x112mm/4.9x4.4in, cable length: approx. 100mm/3.9in List of packages: 1 x TF‑100 display Note: Easy to install and use, please note that the 6-pin waterproof connector can be connected to the controller for display function.