Unbranded Brake Sensing Rear Lights Smart Bike Tail Light Extra Bright Led Warning Bicycle Flashlight Usb Rechargeable Road Cycling Lights(black)

IPX5 waterproof: IPX5 waterproof and dustproof, water spray from any direction will not enter the light even in big raining.Auto start and stop: w/ a intelligent sensor, The bike tail light will turn on automatically riding in low brightness and turn off in high brightness. Also will turn on when braking, switch automatically to brake light mode when decelerating .USB rechargeable: 20 hours Run time. Comes w/ a USB cord that charges form your computer, wall charger, power bank or any other device with a USB port.High lumen COB Led Enhance Your Safety: With excellent COB leds and smart sensors,ultra bright brake light,daytime strobe make you more visible for other road users.It is easier to additionally improve your safety in riding.Saddle fit strap: This bicycle rear light is simple mount.