ROCKBROS Smart Tail Light Bicycle Tail Light USB Charging with Automatic Function IP65 Dustproof and Waterproof 400mAh 3 Lighting Modes Rear Light

P65 waterproof and dustproof. Safe to use on rainy days and when washing your car. Made of aluminum alloy, it is light and sturdy. *Caution* If your bicycle does not have a red reflector on the rear, please use the constant light mode when riding at night. Under the Road Traffic Act, flashing lights and lights of colors other than red are limited to use as auxiliary lights. When using flashing or colors other than red, please use them in conjunction with a red reflector.