1USB Cyclic Charging: Tail light adopts C fast cycle charging, the tail USB fast cycle charging, stable voltage, long life. 2Multiple Lighting Modes: Shoulder light multiple lighting modes, USB cycle charging, IPX3 waterproof, adapt to various harsh environments. 3Multiple Functions: Tail light has multiple functions and can meet all needs at one time. The shoulder light and cycling light are dual purpose, and the warning red and blue flashes. 4Five Lighting Modes: Tail light one key adjustment, five lighting modes, main light strong light low light red and blue flashing auxiliary light strong light low light, to meet the needs of different scenes. 5Polymeric Substance Battery: Warning light uses polymeric substance battery, high efficiency and stability, fast charging, built in polymeric substance battery, stable voltage, lighter and thin, and higher safety.1 x Lamp (Ship with Inbuilt Battery)1 x Strap1 x Bracket1 x USB Cable