5 Lighting ModesThe product has a total of five modes: red light always on + left turn signal high decibel horn + red light flashing + right turn signal high decibel horn + all flashing. Number of luminous SMDs: yellow light SMD*9 (left )+red light SMD*14(middle)+yellow light SMD*9(right). You can switch different signal light modes according to your needs. Wireless Remote ControlThe wireless remote control can be installed on the handlebar of your electric bike or scooter in seconds, you can easily activate the signal by pressing the corresponding button. The remote control is equipped with a CR2032 battery (included in the package), which can last for more than 200 days and is very durable. Rechargeable & WaterproofThe product has a built-in large-capacity rechargeable battery, you can use a computer, tablet or other methods to charge your taillights through the USB interface, easily and quickly. In addition, our system is IPX4 certified waterproof, even riding in the rain without any stress. Easy To Use & InstallOur flash is suitable for all types of seatposts or luggage racks, and the quick release function of the bike tail light allows you to install the flash and remote control within 30 seconds. In addition, there are only 3 buttons on the light, which is easy to operate and minimize the reaction time, which is beneficial to driving safety. Safety upgraded LED bicycle light has high brightness and is visible from 100 meters away, which allows you to ride safely at night and in dim light. In addition, the integrated audible signal signals your presence to other road users and pedestrians so that pedestrians can predict your lane changes for your own safety.