IPX6 WATERPROOF AND WIDE COMPATIBILITY. IPX6 waterproof, stand any inclement weather, or through puddles without worry. Compatible with most mountain , off-road or dirt bikes, Buy with confidence, feel free to if you have any puestion/problem, we will reply you within 24 hours.USB RECHARGEABLE AND LONG LIFESPAN. Comes with 1 splite 4 USB charging cable, charge 4 lights together with any usb device, charging 3 hours for 9 hours endurance(depens on lighting mode), never worry about run out of battery. Long lifespan up to 50000 hrs.SPLITE OR TWO IN ONE INSTALLATION. Come with 4 pcs turn signal light. Especial design for its two-way installation, the bike tail light can be installed in one place like under the seat post, or to seperately install the two bike turn signal light on the two sides of the bicycle bracket. Ultra easy to install and use, No tools are required.5 LIGHTING MODES AND EXCLUSIVE FEATURES. Built wiht 5 lighting modes, the bicycle taillights with wirelss remote control can be chaneged to turn left signal, turn right signal, constant yellow light, keep flashing yellow light and constant red light. Buy one bike tail light with turn signal meet all you need for a bike light!HIGHT BRIGHTNES AND ENSURE SAFETY. The led bike taillight adopt quality LED light beads to achieve amazing brightness of 120 lumens, supporting highly visible from 50-100 meters, warn pedestrians and vehicles around at night or rainy days to ensure safety.