Features1The lamp can automatically control the light and provide 4 lighting modes. Waterproof performance, can be used on rainy days to assure riding safety. 2The LED chip is installed on the top of the inner side to avoid direct strong light; the wellshaped reflector and diffuser make the light distribution uniform; the side is visible. 3Sensing system: There is a light sensor on the top of the lamp. When the light sensor finds that the light is dimmed, it will automatically light up. The darker the ambient light, the strong the bike light. Adjust the light strength and extend the endurance. 4USB charging. Builtin rechargeable 1200mah polymer lithium battery, can be charged through the USB interface, multiple power supply methods including charging head, computer, power bank. 5Antidazzle reflector cup: The light is soft, and the light is controlled within a certain range without disturbing the eyes of pedestrians.SpecificationCondition: Item Type: Bicycle Front LightMaterial: Aluminum Alloy + ABS PlasticColor: BlackPurpose: LightingBattery: Built-in polymer lithium battery in the lamp, USB rechargeable (1200MAH)Size: As Shown in the PicturesPackage List1 x Detachable Holders1 x USB Cable1 x Bicycle Light1 x Manual