Description: Power Generation: This bicycle generator utilizes friction power, harnessing the energy from your bike's tire movement to generate electricity. It's an environmentally friendly solution that promotes energy conservationSturdy Materials: Crafted from quality metal , this bicycle generator is designed for stable performance and durability. Its sturdy construction ensures it withstands wear and tear over timeDouble Connection Ports: The friction generator provides a 6V 3W output, suitable for various lighting devices such as front lights and tail lights. It is ideal for connecting low power rear lights, ensuring versatile usageEasy Installation: Designed with user convenience in mind, the headlight and taillight friction generator can be easily installed without the need for complex tools. Its waterproof design adds to its reliability and longevity.Wide Application: Professionally manufactured to serve as a front light or tail light generator, this product is compatible for various types of bicycles including mountain bikes and electric bikes, making it a versatile choice for night riding enthusiasts Specification: Material:Metal Size Chart: Length 10 cm/3.94 inch Package Includes: 1x 6V 3W Friction Generator Motor with Bracket Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.