Features: Anti-theft Alarm: Keep the button pressed for 3 seconds to convert the bell into an alarm, even if you are far away, you can still reach you. Long Battery Life: With a 200 mAh rechargeable battery, the bell can report 1500 times on a charge, and with the included USB cable, it only takes 1.5 hours to fully charge. Universal: Equipped with two belts of different lengths, suitable for all types of bicycles, including electric bikes, racing bikes, mountain bikes, and scooters. Durable: This electric bell has IPX5 waterproof, dustproof, and shockproof certification, allowing it to withstand tough conditions and last for many years. Service: If you have any questions, please contact us to get high-quality service. Package Includes: 1 * Bicycle Horn Note: 1. Due to manual measurement, please allow slight errors. Make sure you don't mind before bidding. 2. Colors may vary depending on the screen, please understand. Hello, please pay attention to your shipping address when purchasing products. If your shipping information (such as name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly.