[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 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 to control during riding. Suitable for Mountain, 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. [IPX2