① Bicycle Taillight Multi Lighting Modes USB Charging LED MTB Road Bike Flash Tail Rear Light For Cycling Seatpost Warning Lamps ② -USB charging ③ -IPX2 waterproof ④ -Shell Material: Waterproof ABS ⑤ -Charging time: about 2 hours ⑥ -Working Time: 3-6 hours according to different using mode ⑦ -Easy to install, suitable for many sizes of handlebars or seatpost ⑧ -5 lighting modes style: Strong light, Weak Light, Flashing, warning lights, 100% lighting ⑨ How to use ? ⑩ Open: click 1 time (0.5 second) ⑪ Close: 5 lighting modes style need press 3 seconds. 4 lighting modes style need press 1 second. ⑫ 750-ps - 0080203 ⑬ What should I if I don't receive my item? ⑭ Please contact us first, we will track your item. If the parcel was lost because of some reason, we will think over to full refund or resend it for you. ⑮ If the products have problems how to do it? ⑯ Please contact with us in time, we will solve it. ⑰ Specifications: ⑱ High brightness ⑲ Five modes ⑳ Long endurance ㉑ Small and light ㉒ USB quick charging ㉓ The shape is unique and distinctive ㉔ Powerful inner core circuit board ㉕ Ipx-2 life waterproof ㉖ Easy to disassemble and assemble at any time ㉗ Package Included: ㉘ Tail lights * 1 ㉙ Headlight straps *1 ㉚ USB cable * 1 ㉛ Packing box * 1