Wireless Taillight --- The taillight is equipped with wireless remote control, with remote control distance of 0-50 meters. The sensitivity is precise and stable. In the dark, you can quickly find your bike with the remote control. Smart Alarm Taillight --- The bicycle taillights have a smart alarm function. After the taillight sets the alarm mode, if the taillight detects vibration, it will alarm. Alarm sound is 105 at 120dB. It can make your bike safer. Smart Brake Tail Light --- The tail lights have brake sensing function. When the taillight detects brake deceleration, the taillight will switch to brake light mode. The rear lights emit a strong light. Improve bike safety. Smart Induction Tail Light --- In slow flash mode and breathing light mode, turn on the tail light switch. If you are driving in a dark environment, the rear lights will turn on automatically. High Quality Tail Lights --- The tail lights are IP65 waterproof. On rainy days, the taillights can be used normally, it's USB charging taillight. It can be charged via a variety of USB devices.