This is a quality bicycle rear lamp, 5in1 multifunction design, it is consisted of bicycle front light, horns, mobilephone holder, recharge pal, and warming light. It is not just a bicycle light and warning light , but also high decibel horn and bike mobilephone holder. It can also be used as a temporary power source when it is necessary to meet the recharging requirements for outdoor riding. This LED light has 4 illumination modes, and it can be adjusted up and down 50 angle of illumination to adapt to various road conditions. Specifications: Name: LED Lamp Material: ABS Color: black, green (optional) Battery: 1 * 3.7V, 3000mAh lithium battery (included) Item size: 135 * 60mm / 5.31 * 2.36in Item weight: 205g / 7.23ounce Package size: 175 * 155 * 62mm / 6.89 * 6.10 * 2.44in Package weight: 296g / 10.44ounce Packing List: 1 * Light 1 * Horn-Rubber 1 * Bracket Pad 1 * Bracket 1 * Horn 1 * Cable