[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 alert to help protect your bike. [USB Rechargeable]: Built-in rechargeable battery allows for convenient charging via USB. A full charge takes 20 minutes and supports 30–40 days of use, approximately 3,000 to 4,000 rings, with a standby time of up to 180 days. [Waterproof and Durable]: Rated IP65 for protection against water, dust, and impacts, 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 reflection and display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.