[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. [Anti-theft Alarm]: Press and hold the left button to activate the alarm mode. If movement or vibration is detected, the horn will emit a loud warning sound to help protect your bike. [USB Rechargeable]: Built-in rechargeable battery allows quick charging via USB. A full charge takes approximately 20 minutes, providing up to 30-40 days of use, with up to 3000-4000 rings and 180 days of standby time. [Waterproof and Durable]: Rated IP65 for protection against water, dust, and impacts. Suitable for use in various weather conditions, including rain, making it ideal for outdoor riding. Color: Black Material: Plastic Package Contents: 1 x Electric Bike Horn, 1 x USB Cable Note: The package includes only the items listed. Other accessories are not included. Slight color variations may occur due to lighting and screen display differences. Measurement may vary by +/- 1-3 cm.