Description: Mini bicycle headlight, USB charging, compatible with computer/power bank/car charging, can also be used as a flashlight, and can even charge mobile phones in reverse 800 lumens high-brightness lamp beads, intelligent light sensing, can automatically adjust the brightness of the light according to the ambient light High-definition power display, keep abreast of battery conditions. 5 modes to choose from (intelligent light sense, high light, medium light, low light, flickering), suitable for different scenes 4000maH large-capacity battery, long battery life, wide light range, safer riding at night Suitable for handlebar diameter within 3cm/1.18inch, portable disassembly, no tools, only four steps Specification: Material: Aluminum alloy Size(LxWH): Approx. 10x5.5x2.8cm/3.94x2.17x1.10inch Package Includes: 1 Piece Bike Headlight 1 Piece USB Cable 1 Piece Bracket 4 Pieces Spacers Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!