This lamp is easy to install and won't take up much space, bring you safety in dark environment and won't bother your cycling. Features: 500 lumens, 200m range, brighter and farther. 85 ° wide angle floodlight, with a wider range of illumination. 5 modes freely adjust, you can choose the mode you need. Large capacity battery for long working time. USB rechargeable design, you don't need to worry its battery. There are yellow warning lights on the side for safer riding. Highlight the lamp bead, and not dazzling. Cut-OFF line light, won't hurt eyes and safer. Made of fine quality aluminum alloy, smooth feeling, wear-resistant and rust-proof for long using time. Snap on bracket, quick installation and removal, 360 degree rotation, convenient for you to adjust the lamp to the right angle. IPX5 waterproof grade, can also be used in rainy days. Specifications: Item color: black, silver (optional) Lumen: 500lm Material: aluminum alloy Waterproof: IPX5 Fitment: applicable to handlebars with diameter less than 35mm Battery: 3.7V, 2000mAh Item size: 105 * 30 * 30mm / 4.1 * 1.2 * 1.2in Item weight: 132g / 4.7ounce Package size: 142 * 125* 47mm / 5.6 * 4.9 * 1.9in Package weight: 218g / 7.7ounce Packing List: 1 * Bicycle Light 1 * USB Cable 1 * Bracket