REMOTE CONTROL TURN LIGHT - Easy to install. Lightweight and durable bike helmet turning light that can be pasted on almost all kinds of helmet. It also can be used as backpack lights, warning lights and more.WATERPROOF BICYCLE TAIL LIGHT - This bike turn signal is made of water resistant material, so it can be used in small to moderate rain. Your best partner for outdoor cycling.USB RECHARGEABLE & CR2032 - The turn light is USB rechargeable, charging for 1-2.5 hours can use for 4-5 hours. The remote control can replace the CR2032 battery easily.SET YOUR OWN LIGHT MODES - 6 light mode options: Red light always on - Red light breathing flashing - Red and blue light flashing - Left turn signal lamp - Right turn signal lamp - Double flashing. You can switch different modes according to your needs and different occasions to get the best lighting experience and protect yourself.