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 How to use? Open: click 1 time (0.5 second) Close: 5 lighting modes require press 3 seconds; 4 lighting modes require press 1 second High brightness, safer Five modes, follow one's incline Long endurance, sufficient power supply Small and light, portable USB quick charging The shape is unique and distinctive 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