Bike taillight,Bicycle 2-LED Taillight,Super Bright,Rear Bike Light Set 2 LED taillight, angle adjustable quick-release mount Without batteries,using two AAA batteries. It can be installed for Taillight bracket and for Seat Post bracket Rugged construction with a recycled, water resistant outer fabric Three-mode red LED taillight with two LEDs, Flashing/Constant/Chasing.