Features:* COB highlight lamp beads* USB charging* 130 dB speakerSize: 101.5*49.5*24.5CMLamp beads: XPE+COB+2835*2Main light/fog light: 300 lumens/30 lumensBattery: 1200MAH polymer battery (with protective plate)Sound mode: 5 kinds, 130 decibelsMaterial: ABS+GPPSWaterproof rating: Level 4Waterproof and control-do not install inferior bicycle lights. Designed for inclement weather and crashes, your bicycle light will be able to withstand a 10-foot drop or be knocked over by a vehicle. Can be used in snow, rain and emergency situations.USB rechargeable/long-term: The highest quality rechargeable battery is pre-installed to extend battery life. In the limited time, the brightness is 300 lumens. The lamp life is about 10,000 hours.No more accidents-90% of bicycle owners should have no bicycle lights and accidents due to lack of lighting at night, so you must have reliable bicycle lights to provide safety when riding at night.