Width: 58mm

Length:63mm

Battery: NO

Weight: 104g

Color: As Picture

Here are the functions. As following:

1. It combinates electric loundspeaker with alarm. Economic and small.
2. It is waterproof. Don't worry be rust.
3. it is a very sensitive alarm according to the weight sensor control switch,the thief can't close to it.
4.you need to press a button, it's quick-fast and convenient.