Features： 1、1. The 120 decibel electric bicycle horn has a clear and loud sound effect, which is enough to warn motorists and pedestrians. 2、2. Press and hold the button for 2.5 seconds to change the speaker mode. With 4 ringing modes, USB charging for 20 minutes, with alarm mode, which can remind you that your bicycle is moved or stolen. 3、3. This bicycle horn is made of high‑quality ABS plastic, strong and durable. Not easy to damage, reliable quality and long service life. 4、4. Bicycle handlebar alarm electric horn is light and compact, available size (length x width) is about 34mm * 60mm. 5、5. The electric bicycle handlebar with rubber ring is easy to install, suitable for handlebars of various diameters, and easy to use. Specification: Specification： Specification: Material: ABS plastic Sound: four ringtones Volume: 120 decibels Battery: 200mAh Weight: 25 grams Size: 34mm * 60mm Package List： 1 * Bike Bell 1 * USB Cable