Bicycle Parts Specifications: 1. Material: The tail light is made of waterproof material to ensure safe use in rainy days. 2. Battery: The turn signal lamp is USB charged, and it can be used for 2.5-3 hours after 1-2 hours of charging. The remote control can easily replace the CR2032 battery. 3. Adjustable: The taillights can be adjusted up and down at a large angle to make the light form a controllable distance line. 4. Lamp beads: high-brightness SMD patch lamp beads, 14 red SMD and 18 yellow SMD on the left and right sides have high brightness, which can effectively remind the traffic behind. 5. Tweeter: 120 decibel speaker, which can remind passers-by to be safe, and it is safer to ride at night. 6. Remote control: wireless remote control, easy to operate, the corresponding lights can be turned on according to the road conditions during riding, and the left/right turn signal can be turned on when turning. 7. Illumination mode: There are 2 modes for the tail light switch mode (middle light-all light), and 5 modes for the remote control mode (red light always on-red light flashing-all flashing-left turn signal + horn-right turn signal + horn ), you can choose according to the road conditions. 8. Applicable to: all bicycles, childrens bicycles and adult bicycles. It can also be used as helmet light, backpack light, warning light and so on. Details Name: Bicycle wireless remote control taillight with horn turn signal Product color: black Lamp color: red and yellow Lamp beads: LED Voltage: 3.7V Charging method: USB charging Taillight battery: built-in lithium battery Battery capacity: 900 mA Charging time: about 3 hours Working time: about 2-3.6 hours Loudspeaker decibel: 120 decibels Modes: Tail light switch mode: 2 modes (middle light-all light) Remote control mode: 5 modes (red light always on-red light flashing-all flashing-left turn signal + horn-right turn signal + horn) Waterproof level: life-level waterproof Taillight size: 94 * 32.5 * 26mm Remote control size: 54 * 42cm Net weight: 54g (indicator light + strap) Gross weight: 110g Package: 1*Taillight 1*Remote Control 1*Band 1*USB Charging Cable