Material: ABS material Battery: 700 mAh Battery brightness: 80 lumens Headlight size: 9.75 x 3.4 cm. Remote control size: 5.5 x 4.5 cm. Charging time: 2.5h Lighting time: 5.5 h Flashing accessories*1 remote control*1 fixed seat*2 silicone strap*2 USB charging cable*1 Mode: red light is always on, red light is flashing all flashes, the left turn signal is the right turn signal. Features: wireless remote control USB charging six-speed adjustment compact and portable without fear of wind and rain. 5 Light mode options - Turn right and left with 120dB sound flashing light, always on red light, flashing red light or all flashing. You can switch between different signaling modes to suit your needs; SIMPLE TO USE AND EASY TO INSTALL - Installs in seconds without tools, so you're ready to go in no time, our turn signal works with any type of seatpost or bracket (horizontally and vertically adjustable). With only 3 buttons, it is easy to use and minimizes reaction time. Tap, flash and twist; Wireless Remote Control: Control the bike's direction signal to send signals in different modes with 3 easy-to-use buttons. Equipped with CR2032 battery (included), the battery life is over 200 days, which is convenient for riders to control while riding;