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(as working video showing) 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, safer 19. Five modes, follow one's incline 20. Long endurance, sufficient power supply 21. Small and light, portable 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