With aluminum alloy shell, the heat dissipation performance is effectively improved Portable snap bracket, no need to install tools. The bottom adopts anti-skid design and is not easy to loosen IPX5 (proof from small rain and splash water) USB charging makes riding more convenient Fast charging. After fully charged. It will automatically disconnect the power. To protect the battery. Extend battery life Colour:Black Material:Aluminum alloy Size:9.8×2.8×2.8cm Package Contents: 1 * Bicycle Headlight Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.