Features: Usb rechargeable: This bicycles bells is rechargeable and can be charged by usb port, which is convenient for you to charge. Durable structure: The bicycles bells is made of high-quality material, which is durable and has a long service life. The electric bicycles horn has a clear and loud sound effect, which is enough to warn motorists and pedestrians. This bicycles horn is made of high-quality ABSplastic, strong and durable. Not easy to damage, reliable quality and long service life. Specifications: Material:ABS Size:As Picture Shown Color:Black/Red/Blue Weight:40g Charging:Type-C Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Electric Bike Horn