WIDE FIELD OF VIEW-180-Degree field of view width, visibility up to 150m, bike tail light bright has 40 of 100LM LED lights, bright enough to be seen from 150m away in foggy/rainy day or even in dark night. offers super brightness for you but not dazzling WIRELESS REMOTE CONTROL & 4 Modes-Remote control the turn lights for bicycles to send signals in different modes by the 3 easy to use buttons on the wireless controller. Remote control on handlebar, easy for cyclist to control during riding. Suitable for Mountain, MTB and Road Bicycles. 4 Modes: turn left light, turn right light, red led warning light, SOS USB RECHARGEABLE- rear bike light use 500mAh Li-on battery, allow the bike taillight usb rechargeable to be fully charge in 2 hours and can work for about 5 hours under constant brightness. Save the time to replace batteries every week. NEVER waste money on batteries again. led bike light comes with a CHARGING CABLE that charges from your computer, power bank or any device with a USB port. Make it the BEST usb bike light on Amazon IPX2 WATERPROOF- bike brake light IPX2 waterproof function can resist the rainy days and humid climate, waterproof designed for bike outdoor. The best safety equipment for outdoor riding can be used as a Christmas gift for your friends and relatives EASY TO USE- bike light back hook onto your belt, running gear, reflective vest, backpack, dog collars, harnesses, or anywhere on your clothing. Mount to your bicycle, helmet, skateboard, scooter, stroller, wheelchair, or anywhere you can imagine. Strengthened the safety factor of the night travel