[High Decibel, 4 Sound Modes]: The bike horn produces a loud 140-decibel sound with four sound modes, effectively alerting pedestrians and enhancing rider safety. [Upgrade Design]: This bicycle horn features a stylish, compact design that complements your bike. It is easily installed and removed using straps, requiring no tools for setup. [Anti-theft Alarm]: Press and hold the left button to activate the anti-theft alarm mode. If vibration or shaking is detected, the horn will emit a loud alarm to help protect your bike. [USB Rechargeable]: Built-in USB rechargeable battery allows for quick charging. Fully charged in 20 minutes, the horn can last 30-40 days with up to 3,000-4,000 uses and 180 days of standby time. [Waterproof and Durable]: Rated IP65 for waterproof, dustproof, and shock-resistant performance, making it suitable for use in various weather conditions, including rain. Color: Black Material: Plastic Package Contents: 1 x Electric Bike Horn, 1 x USB Cable Note: Light and display differences may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.