Model:B668DG6747JK68021 The wireless remote control: The smart bicycle rear light with turn signal is a wireless control system that is easily installed on the handlebar of the bicycle. Taillight functions can be easily controlled with three easy-to-use buttons on the wireless controller, providing rider safety while riding.The turn signal consists of 32 LEDs with a brightness of 150 Lumens. Turn signals and brake lights for bicycles are visible from more than 100 meters away. Visible from afar day and night, you will no longer be afraid to take your bike.Built-in rechargeable lithium battery, recharge your rear light with turn signal via USB, simple and fast from your computer, mains socket or external battery. All cables are provided. Ride even in the rain thanks to the IPX4 waterproof certification, The best outdoor cycling safety gear can be a gift for your family and friends.5 lighting modes, turn right and left with 120dB sound flasher, red light always on, flashing red light or all flashing. You can change the different light modes with a simple press of the buttons according to your needs, using this turn signal will be a breeze.