FEATURES: 1.Material:Aluminium material+ Plastic 2.Light Color:Green,Cap Color: Silver 3.More energy-efficient,with light & motion sensors 4.Durable, High Impact, Rust Resistant 5.2*LED Flash light(included) 6.6 x AG10 Batteries included DESCRIPTION: 1.This LED Bike Wheel Light fits most bicycles, motorcycles and cars. 2.LED Bike Wheel Light features motion sensors, LEDs and replaceable batteries 3.LED lights will turn on when the vehicle is moving and off when the vehicle comes to a stop. 4.Enhances safety by increasing visibility at night and during bad weather conditions. Package content: 2 x Green LED Bike Wheel Lights 2 x Valve covers 6 x AG10 Batteries 2 x Battery stopper Pay attention: Do not use in Freeway!! Before using:Please unscrew the cap and take of the battery stopper between the battery and Led Spring first and then you can make them work!