[Super Bright Double Eye Tail Light Up to 500 Lumens]Can emit a powerful 500 lumen bicycle tail light, 180 degree beam angle and 656 feet of visibility, with a running time of more than 30 hours, it is safe to ride. Built-in high-intensity reflector, even if the tail light has no power, it can still protect your safety.[6 Stylish Lighting Modes]Easy switching according to different road conditions during daily riding. Horse racing mode - 30 hours, side flash mode - 6.5 hours, breathing mode - 4 hours, slow flash mode - 20 hours, flash mode - 10.5 hours, constant light mode - 5 hours. Whether youre walking with your dog, biking, skateboarding, camping or hiking, our safety lights keep you safe.[USB Rechargeable]When connected to any device with a USB port, it can charge the bicycle rear light. Save the hassle of changing batteries. A full charge takes 1 - 1.5 hours, and the longest usage time can reach more than 30 hours. Please fully charge it before first use.[IPX6 Waterproof Rainproof and Snowproof]IPX6 waterproof bicycle tail light ensures that you can experience its excellent function in any harsh weather conditions. A flashing pattern will grab their attention, and a wide range of light will keep you out of danger.color:BlackMaterial:ABS+PCPackage Contents:1 x tail light1 x strap1 x USB cableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.