UNIQUE DESIGN: Come with 2 turn signal light(1PCS right lights, 1PCS left lights), This turn signal bicycle taillight can be installed one place like bike seat post. Or to disassemble the left and right turn light and set up the two sides of the bicycle rear pole. Excellent bike tail light for night cycling.5 LIGHTING MODES: This bike tail light comes with remote control that can be switch to left turn signal light, right turn signal light, constant red light, constant yellow light, fast flashing yellow light. Built with premium material, Ultra wear resistant and long durability.HIGHT BRIGHTNES: Select quality LED light beads, 120 lumens high brightness, The LED lights provides highly visible supporting from 50-100 meters, warn pedestrians and vehicles around at night or rainy days to ensure safety.LONG LIFESPAN & WATERPROOF: The bike tail light built in 600mah batteries, strong endurance, equipped with USB charging cable, dont need to worry run out of the battery, charging 3 hours can be used for 9 hours(depends on lighting mode). IPX6 waterproof, stand any inclement weather, or through puddles without worry.