Features:1. Electric throttle can do real-time digital voltage display, intuitive and convenient, and you are able to accurately determine the remaining power2. LCD display for electric scooter adopts universal design, it can be installed on various electric bikes with voltage varying from 12 to 99V;Also having no limitation to the battery types3. You can early judge whether the battery of electric pocket bike is damaged and do the maintenance job or not according to the voltage display4. Accessories for electric scooter are compatible with most electric bike with 22.5 mm handlebar5. The wires and interfaces of electric bike accessories are durable, and ensure low malfunction during the long time use; Easy to install and use Specification:Condition: 100% Brand NewMaterial: PlasticColor: Black4 Wires: Hall Signal(Green), Red(+5V), Black(Negative Pole), Yellow(Bike Positive Pole)Applicable Handlebar Diameter: Approx. 22.5 mm / 0.88 inchCable Length: Approx. 2m / 6.5ftWeight: Approx. 98g Packing List:1 x Thumb Throttle Note:It usually is installed on right side