Bicycle Taillight Multi Lighting Modes USB Charging LED MTB Road Bike Flash Tail Rear Light For Cycling Seatpost Warning Lamps -USB charging -IPX2 waterproof -Shell Material: Waterproof ABS -Charging time: about 2 hours -Working Time: 3-6 hours according to different using mode -Easy to install, suitable for many sizes of handlebars or seatpost -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 for 3 seconds. For 4 lighting modes, press for 1 second. High brightness, safer Five modes, follow one's incline Long endurance, sufficient power supply Small and light, portable USB quick charging Unique and distinctive shape Powerful inner core circuit board IPX-2 life waterproof Easy to disassemble and assemble at any time Package Included: Tail lights * 1 Headlight straps * 1 USB cable * 1 Packing box * 1