Usage Tips:Bicycle Taillight Multi Lighting Modes USB Charging LED MTB Road Bike Flash Tail Rear Light For Cycling Seatpost Warning LampsDescription:-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 style: Strong light, Weak Light, Flashing, warning lights, lighting(as working video showing)How to use ?Open: click 1 time (0.5 second)Close: 5 lighting modes style need press 3 seconds. 4 lighting modes style need press 1 second. 750-ps - 0080203Wholesalers and retailers are welcomed.For wholesale,we will offer or free shipping method which only takes short time to arrive.If you are a retailer and wanna make your own business, we could send the goods to your customers directly and won't leave any information about us if you'd like to. What should I if I don't receive my item?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. We are honest seller, so don't worry. If the products have problems how to do it?Please contact with us in time, we will solve it. Don't leave any bad review firstly, that can not solve any problem. Specifications:High brightness, saferFive modes, follow one's inclineLong endurance, sufficient power supplySmall and light, portableUSB quick chargingThe shape is and distinctivePowerful inner core circuit boardIpx-2 life waterproofEasy to disassemble and assemble at any timePackage Included:Tail lights * 1Headlight straps *1USB cable * 1Packing box * 1