- USB charging - IPX2 waterproof - Shell Material: Waterproof ABS - Charging time: about 2 hours - Working Time: 3-6 hours according to different using modes - Easy to install, suitable for many sizes of handlebars or seatposts - 5 lighting modes: Strong light, Weak light, Flashing, Warning lights, 100% lighting (as shown in working video) How to use: Open: Click once (0.5 second) Close: For 5 lighting modes, press and hold for 3 seconds. For 4 lighting modes, press and hold for 1 second. Specifications: - High brightness for improved safety - Five lighting modes to suit different conditions - Long runtime with sufficient power supply - Compact and lightweight design for portability - USB quick charging - Unique and distinctive shape - High-performance internal circuit board - IPX2 water-resistant design - Easy to assemble and disassemble Package Included: - Tail light * 1 - Headlight strap * 1 - USB cable * 1 - Packing box * 1