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-brightne SMD patch lamp beads, 14 red SMD and 18 yellow SMD on the left and right sides have high brightne, which can effectively remind the traffic behind.5. Tweeter: 120 decibel speaker, which can remind paers-by to be safe, and it is safer to ride at night.6. Remote control: wirele 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, children's bicycles and adult bicycles. It can also be used as helmet light, backpack light, warning light and so on. Detail Name: Bicycle wirele remote control taillight with horn turn signalProduct color: blackLamp color: red and yellowLamp beads: LEDVoltage: 3.7VCharging method: USB chargingTaillight battery: built-in lithium batteryBattery capacity: 900 mACharging time: about 3 hoursWorking time: about 2-3.6 hoursLoudspeaker decibel: 120 decibel 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 waterproofTaillight size: 94 * 32.5 * 26mmRemote control size: 54 * 42cmNet weight: 54g (indicator light + strap)Gro weight: 110g Package: 1*Taillight1*Remote Control1*Band1*USB Charging Cable