SYOSI LED Bike Tail Light, 4Pcs Red LED Bicycle Tail Light, Mini Back Safety Bike Lights for Skateboard Kids Scooter MTB Rack, IPX4 Waterproof Taillight, Night Riding Mountain Road Bike Taillight

【Super Bright And Three Light Modes】Battery powered rear bike lights offer 3 lighting modes—fast flash, slow flash, and constant light—allowing you to customize your visibility and increase riding safety whether day or night.

【Durability】Crafted with aircraft-grade aluminum alloy housing, bike light offers unbeatable durability and versatility. It withstands rough outdoor conditions, while the 3-stage adjustable strap ensures a secure fit on most sizes of mountain bicycle seat post, road bike rack, scooter helmet, kids' bikes, ebike, motorcycle, mtb...etc.

【Long Battery Life】With its long-lasting button batteries. this tail light provides extended usage time, allowing you to ride confidently without worrying about frequent recharging.

【IPX4 Waterproof】Designed to withstand splashes and heavy rain, this IPX4 waterproof taillight provides reliable functionality even in wet, rainy, foggy or cloudy weather conditions. Ride worry-free knowing your bike back light is protected from water damage.

【Easy Installation】Our high-quality bicycle lights can be installed in seconds without any tools or other equipment. Add light to your bike, backpack, helmet or other areas to maximize safety and make your ride more comfortable.