1. UNIQUE DESIGN: Includes 2 turn signal lights (right and left) and 1 wireless remote control. This bicycle taillight can be installed in one position, such as on a bike seat post, or the left and right lights can be separated and mounted on both sides of the rear of the bicycle to suit individual preferences. 2. FIVE LIGHTING MODES WITH ALARM: The bike turn signals offer five lighting modes. Use the remote control to switch between left turn signal, right turn signal, steady yellow light, steady red light, and flashing strobe mode. Helps alert pedestrians and vehicles to your riding direction. 3. WIRELESS REMOTE CONTROL: The rear bike light is operated via a wireless remote control that mounts on the handlebar for easy access. Maximum operating range is approximately 34 meters. The remote control is rechargeable. 4. HIGH BRIGHTNESS: Features high-quality LED beads with an output of 120 lumens. Provides excellent visibility from 50 to 100 meters, enhancing safety by warning nearby traffic during nighttime or adverse weather conditions.