Description Super Bright Bike Turn Signal - 39 high light LED lamp beads, up to 100 lumen output, bright enough to be seen from 150 feet away in foggy/rainy day or even in dark nightWireless Remote Control - Install a remote control on the bike head, easily control the bike tail light to send signals in different modes by the three easy to use buttons on the wireless controllerIPX2 Waterproof - The bike lights are protected by the high density special designed waterproof plastic lamp body. You can ride your bike in any weather. Easy to assemble, no tools requiredUSB Rechargeable - Includes built-in 500mAH Capacity battery and charging cable, fully charge in 2 hours and can work for about 4~5 hours. The bicycle tail light can be charged from your computer, portable power bank or any devices with USB portLarge Application - Ewolee bike light can be used as taillight and turn signal light at one time. 5 different lighting modes, turn left light, turn right light, red led warning light, blue lights, fast flash. The bike light is suitable for all kinds of bicycles