SHEAWA Bicycle Tail Light, Automatic Lighting, Magnetic Power Generation, Flashing

• [Magnetic automatic lighting] Adopts magnetic power generation technology, the tail light will automatically turn on when you quickly wave the magnet close to the lightning mark on the main unit while maintaining a distance of approximately 3 to 5 mm.No batteries required, very convenient! • [Automatic flashing while driving] As the wheels turn while driving, the magnets attached to the spokes move closer and further away from the taillight, creating a flashing effect! • [180-degree wide-angle lighting for greater safety] Built-in 2 high-brightness LED lights that can illuminate a 180-degree wide-angle, ensuring safety at night with high visibility even from the sides! • [IPX4 Waterproof] It has IPX4 waterproof performance, so you don't have to worry about it suddenly raining while riding![Applicable size] Can be attached to backhawks from 12 to 22 mm! • [Package contents] 1 x tail light 2 x magnet