Features 1、With COB lamp beads, it is bright and eye‑catching and adds more safety to night riding when night riding, 2、The angle can be adjusted, the field of view is more closed, and the angle can be adjusted at 45°, making night riding more fun. 3、The straps of the mounting bracket can be adjusted in four gears to adjust the tightness, and the firm lining structure can buckle the strap holes. 4、With IPX4 waterproof, you can ride in rainy weather (please make sure the USB capsule plug is closed). 5、With its high quality material of PC and ABS, it is durable and has a long service life. Item Type: Cycling Taillight Material: PC + ABS Length: Approx. 87mm/3.4in Battery: Built-In 500mAh Polymer Lithium Battery (Built-In Battery Shipped) Charging: USB Charging Luminous Flux: 30lm Lamp Beads: COB Lamp Beads Waterproof Rating: IPX4 Package List 1 x Taillight 1 x Mounting Bracket Strap 1 x USB Charging Cable 1 x Chinese and English Manual