Product DescriptionDescription: ☆ [USB Charging] can be easily connected to USB devices such as computers, charging treasures and mobile phone chargers for charging. ☆ [Easy to Install] The bracket is easy to handle and has an adjustable angle. ☆ [Super Bright 5 Kinds of Gears]100% always bright 1.5h, 75% always bright 2h, 50% always bright 2.5h, 25% always bright 3h, flashing 2h ☆ [Waterproof and Lightweight] IP55 waterproof, miniature and lightweight. ☆ [Double Lamp Beads] high quality LED, adjustable light, high brightness, long shot, wide.Tips: ☆ Adjust the upper and lower angles of the lights, which can be far enough away, and will not reach the pedestrian or the driver's head. ☆ Generally, low-lighting for slow riding and high-light for fast riding (glasses have adaptability to the environment, the use of brightness of the lights is not related to the darkness of the surrounding environment, and the relationship with riding speed is greater )Product Information: Product Name: Bicycle headlights Brightness: 500 lumens Battery: 1500Mah polymer lithium battery Lamp beads: two 3535 5W lamp beads External material: aluminum alloy + engineering plastic Charging time: 4~5 hours Weight: 106g Size: 16*9.5*4.5cmPackage Includes: 1 x Bicycle headlights