1. High-brightness SMD lamp beads: 14 red SMD and 18 yellow SMD on the left and right sides, high brightness, effectively improving the safety of night riding. 2. Customizable light modes: 5 light modes available turn right + high-decibel alert / turn left + high-decibel alert / red light steady on / red light flashing / all lights flashing. Switch between modes based on your needs and riding conditions for optimal visibility and safety. 3. USB rechargeable design: The taillight features USB charging; a 1-2 hour charge provides 2.5 to 3 hours of operation. The wireless remote control uses a replaceable CR2032 battery. 4. Built-in tweeter: Equipped with a 120-decibel speaker to safely alert pedestrians and vehicles, especially during nighttime riding. 5. Waterproof construction: Made with waterproof materials, ensuring reliable performance in rainy conditions. 6. Remote-controlled bicycle taillight: Lightweight and durable design fits all types of bicycles, including children's and adult bikes. Can also be used as a helmet light, backpack light, or warning light. Specifications: Product Name: Remote Control Turn Signal Taillight Lamp Beads: LED Battery Capacity: 900 mAh Charging Time: Approximately 3 hours Working Time: Approximately 23.6 hours Voltage: 3.7V Color: As shown Material: ABS Size: 94 x 32.5 x 26 mm Package Contents: 1 x Bicycle Taillight 1 x Remote Control 1 x USB Cable Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error is permitted within +/- 13 cm.