Description: This bike tail light with turn signal has 36 of 100LM LED lights, bright enough to be seen in foggy/rainy day or even in dark night. Remote control the bike tail light to send signals in different modes by the 5 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. The bike turn signals use 500mAh Li-on battery, allow the bike tail light to be fully charge in 2.5 hours and can work for about 2 hours under constant brightness. the signal light can be charged from any USB port, convenient and save your money and hassle. Easy to install, slide the fixed support in grooves and snap the buckle. Put the loaded turn signal on the bicycle seat tube and tighten it with screws, The remote control is fixed on the bike handle and tighten it up. IPX4 Waterproof level make this bike turning light can be used in small to moderate rain, your best partner for outdoor cycling! Specification: Material: Plastic Size: Rear Light: 85x22mm/3.3x0.9inch Remote Control: 50x45mm/2x1.8inch Package Includes: 1 Piece Bike Rearlight 1 PIece Remote Control 1 Piece Bike Rearlight Fixing Holder 1 Piece Remote Control Fixing Holder 2 Pieces Silicone Strap 1 Piece USB Cable