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 1 time (0.5 second) Close: press and hold for 3 seconds for 5 lighting modes; press and hold for 1 second for 4 lighting modes 750-ps - 0080203 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, what should I do? Please promptly and we will resolve the issue. Please do not leave negative feedback before contacting us, as it does not help resolve issues. Specifications: High brightness, safer Five modes Long endurance, sufficient power supply Small and light, portable USB quick charging Unique and distinctive design Powerful inner core circuit board IPX2 waterproof Easy to disassemble and assemble Package Included: Tail lights * 1 Headlight straps * 1 USB cable * 1 Packing box * 1