New. Open box. By Mengshen. For bicycle, bike, motorcycle, car, vehicles, door, or window. It can sense vibration and will set the alarm off. It has 10 levels of sensitivity for you to choose from. Super loud (110db). Alarm lasts 40 seconds. Compact design. Dimensions of the alarm: 3 1/3” x 1 6/8” x 1/2”. Remote control dimensions: 1 1/4” x 2 1/2” x 1/2”. The remote can be attached to your keychain. It has an on/off switch, disarm doorbell, and emergency button. Comes with double sided adhesive pads to attach to the alarm. Can be used outside but needs to be placed somewhere where it will not get wet, like under a bike seat.