Description: Unique Design: This bicycle generator light set features a retro design that is both stylish and unique, making it an excellent fit for vintage bicycles or city commuters bikes.Material: This dynamo bicycle light is made of metal material, which is durable and can work normally in various harsh environments, providing safe for your night riding.Eco Friendly: The generator light operates on the principle of friction power generation, using the friction force of the bicycle tire to generate electricity. Waterproof: The Generator Dynamo Headlight features a waterproof design that allows it to work normally even in rainy weather, ensuring safe and reliability.Easy Installation : The generator Bicycle Head Tail Lamp comes with wiring included for easy installation without professional tools. It can be easily installed on your bicycle. Specification: Generator (Excluding Connecting Bracket):10.5cmx5cm/4.13inchx1.97inch, Headlight:12cm/4.72inch Package Includes: 1 Set 12V6W Bicycle Generator Light Note: Please allow slightly errors due to manual measurement and different monitors.