- Great security product<br />- Ultra loud 120dB alarm -- scares potential thieves away<br />- With a magnetic cupule on the back<br />- 30 seconds alarm time<br />- 1*9V battery powered (sold separately)<br />                                                                                                                                Dimensions: 3.58 in x 2.24 in x 1.14 in<br />Weight: 2.36 oz