The taillight and remote control have already been paried when you receive them. Press the power button on the taillight to power up, then press the button on the remote control, The corresponding light will flash. Press the power button again to power off.
Hold down either button on the remote control for about 2 seconds for Emergency Flashing
One remote control can control multiple taillights at the same time, to pair, hold down the power button for about 2 seconds until it starts flash, then it automatically pair.
BRIGHT AND EYE-CATCHING TO KEEP YOUR SAFETY, bright enough to be seen from 150ft away in foggy/rainy day or even in dark night.
Using the remote controller fixed on bicycle handlebar to control the rear light, makes you more safe.
Support right turn light, left turn light, Emergency Flashers .
USB rechargeable with built-in lithium battery that lasts up to 15 days average use (or up to 8-14 hours of different modes flashing), around 3 months for standy.
Brightness: 10 lumens, Weight: 70g