Great for bikes, helmets, poles, strollers, tents, umbrellas and more. This multi-use LED light fits onto most square and circular objects. It is powered by high intensity LED lights that will make sure you are both safe and visible. Features: - Batteries included, uses 2 CR2032 batteries - Ultra Bright LEDS - 70 hours steady operation - 100 hours flashing burn time - Weatherproof