Feature* Smart battery display* Magnetic head induction code table* 120 decibel speaker with 38cm extension remote control* 1500mAh battery capacity,* 300 lumensLamp beads: T6 high-brightness lamp beads4 kinds of lighting methods: strong light / low light / flash / floodlight yellowUSB direct chargingWaterproof 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.