The Wireless Bicycle Vibration Alarm with USB rechargeable feature is a state-of-the-art anti-theft system for motorcycles and bikes. This alarm system uses vibration detection to trigger an alarm, and it can be easily controlled via remote. The USB rechargeable feature makes it convenient and cost-effective. Protect your bike from theft with this reliable and easy-to-use detector alarm system. Made of high-quality materials, sturdy and Battery capacity: 400mAhBattery voltage: 3.7V Sound decibel: 115dB Remote control distance: 10-80m; Can penetrate walls Remote control battery: 12V/27A alkaline battery Working environment temperature: -10-60 Waterproof performance: IPx5 Colour:Black Material:ABS Package Contents: 1 x Alarm 1 x Remote Control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.