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: press and hold for 3 seconds to turn off (for 5-mode version); press and hold for 1 second to turn off (for 4-mode version) 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 What should I do if I don't receive my item? Please first, we will track your item. If the parcel was lost, we will offer a full refund or resend the item. If the product has problems, how to resolve it? Please promptly, we will assist you. Please do not leave negative feedback immediately, as that does not help resolve issues.