ULTRA-BRIGHT LED BIKE TAIL LIGHT- squibomb bike tail light with turn signal has 29 of 85LM LED lights, bright enough to be seen from 150ft away in foggy\/rainy day or even in dark night.WIRELESS REMOTE CONTROL- 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.USB RECHARGEABLE - The bike turn signals use 2200mAh Li-on battery, allow the bike tail light to be fully charge in 3-4 hours and can work for about 7 hours under constant brightness. The remote control use 180mAh Li-on battery, which can keep working for more than 2 months after 1-2 hours fully charge. Both the signal light and remote control can be charged from any USB Port, convenient and save your money and hassle.EASY TO INSTALL - Take out the turn signal and the fixed support in the packing box, along the grooves, 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, suitable seat tube:0.98-1.26in dia. The remote control is fixed on the bike handle and tighten it up with a screwdriver, suitable handle bar:0.71-1.1in dia.IPX4 WATERPROOF - IPX4 Waterproof level make this bike turning light can be used in small to moderate rain in the temperature of in -4-140F -- your best partner for outdoor biking. Cycling Safety Mountain Bike.