- Audible beep or vibration alert upon metal detection (selectable)<br />- Highly sensitive<br />- Simple and convenient to use<br />- Low power consumption<br />- Automatic and continuous alarm when the battery is used up<br />- With external rechargeable socket hole<br />- Powered by one 6F22 9V battery<br />                                                                                                                                Dimensions: 16.14 in x 3.43 in x 1.57 in<br />Weight: 19.05 oz