BIKE TURN SIGNALS - Our bicycle turn signals are equipped with 4 turn lights, controlled by a wireless remote control. The run time of the bike tail light can last approximately 4 hours of continuous flashing in a fully charged state.4 LIGHT MODES - This bicycle taillight front and rear has 4 light modes. Left turn light and right turn light mode, small red lights keep flashing mode, and all small red lights and yellow turn lights keep flashing mode.USB RECHARGEABLE BIKE TAILLIGHT - Our rechargeable bike taillight and remote control are designed with a USB charging port. 1 split 4 USB cables charge 4 lights together and fully charged in 3 hours. The red light is on when charging, and the green light is on when fully charged.IP65 WATERPROOF BIKE REAR LIGHT - The bike turn signals front and back with a IP65 waterproof, which can be used for outdoor activities on rainy days, in snow, or in thick fog. No tools are required, easy to install the bike turn signals front and back with the rubber O-ring and bracket, and easy to charge and carry.WIDE COMPATIBILITY - This wireless bike turn signals can be installed in the front or rear positions depending on your need. Universal Mounting Bracket is suitable for any vehicle type, suitable for bicycles, electric bikes, scooters, tricycles, motorcycles, etc. a bicycle rear light is suitable for office workers and students. Please contact us first in case of any issues and we will reply to you within 48 hours.