[High Decibel, 4 Sound Modes]: The bike horn produces a loud sound up to 140 decibels and features four sound modes, effectively alerting nearby pedestrians and enhancing rider safety. [Upgrade Design]: This bicycle horn has a sleek, compact design that complements your bike. It is secured with straps for easy installation and removal, requiring no tools for use. [Anti-theft Alarm]: Press and hold the left button to activate the alarm mode. If motion or vibration is detected, the horn will emit a loud alert to help protect your bike. [USB Rechargeable]: Equipped with a built-in rechargeable battery, this bike horn can be charged via USB. A full charge takes approximately 20 minutes, providing up to 30-40 days of usage, with up to 3000-4000 rings 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. Meets outdoor riding requirements. Color: Black Material: Plastic Package Contents: 1 x Electric Bike Horn, 1 x USB Cable Note: Light and screen display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.