About Tail LightsNote: First time using, please use USB charge once to activate Multi functional warning tail lights and intelligent brake sensing lights modes with Wireless Remote ControlWith 6 lighting modes, Slow Flashing / Breathing / Fast Blinking/ Steady Light / Emergency Light / OFFYou can press the buttons on the tail lights to select the mode you need in sequence, or press the button with the light symbol on the remote control to select;It have turn light function too;About the tail light remote controlIt include Electric bell button,Right turn light button,Left turm light button,Taillight button,Arm/disarm button;When you press the tail light button one by one,Taillight Mode into Slow Flashing / Breathing / Fast Blinking/ Steady Light / Emergency Light / OFF;when press Electric bell button,Has the function of reminding passersby;when press Arm/disarm button Entering alrm or disarming mode;Security upgrade, start a happy journey Great Safety devise for an e-bike Love it,the best tail light for the money,so many different modes even has an alarm with remote controlThe best part Anti-theft system Smart design, Light weight but looks a feels solidly built. Very easy to install in a few minutes .