ROCKBROS USB Rechargeable LED Bike Rear Tail Light, Waterproof Powerful Red Light for Cycling Safety, Bicycle Smart Taillight with 5 Modes Mountain and Road Bikes

POWERFUL LIGHT: With high intensity red LED light beads, the bicycle rear light can effectively alert pedestrians and vehicles at night. Wide 180-degree visibility, covering the back and sides for safe cycling. 5 LIGHT MODES: Short press to switch modes, constant light - 8 hours, breathing flash - 18 hours, smooth flash - 30 hours, slow flash - 36 hours, fast flash - 32 hours. Battery capacity is 350 mAh, charging via USB. COMPACT AND LIGHTWEIGHT: Length, width and height 77 x 30 x 34 mm, weighing 30 grams. The bicycle rear light is small, lightweight and portable. WATERPROOF AND DURABLE: IPX6 dustproof and waterproof. The PC case of the light is sturdy and drop resistant. EASY TO USE: Quickly attach the lamp to the seat post with the strap, fits mountain and road bikes, children's bikes, etc.