There are times where security is needed and this hand head metal detector is great for boosting that security. It is easy to use and which are two key features with such an item. It can be set to beep upon detection of metal objects or shake, the shaking setting is useful for when you are wanting to keep things discrete. Great for both home and work security this metal detector can find not only objects but also small ones making has anything concealed. Quality metal detector build for durability aginst wear and tear for ease of use Portable and compact Notifications: Sound or shake Power: Standard 9V Battery (not included) Colour:grey Material:plastic Package Contents: 1 x Hand Metal Detector 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.