Smart Bicycle Tail Light?USB Rechargeable, Waterproof Bike Brake Tail Light, Fits Any Road Bikes

Features Full 6061 Aluminium alloy chassis Waterproof Slope adaptive technology 20hrs+ run time 400mAh Li-ion re-chargeable battery, USB charging Compact and Light weight design (38g) Auto/Manual mode switch Package Included 1x Bike Taillight 1x USB Charge Cable 1x Wrench Easy to Install 1.Place the tail light bracket on the cushion track 2.Tighten the brackets with strap 3.Cut the excess part of the strap 4.Rotate clockwise to attach the taillight to the bracket