Name: 5 In 1 Wall Stud DetectorBattery: 9V battery 6F22 (without battery)Product Size: 152x62x28MMMultifunction wall scanner HW430 features five scanning modes:Stud 1/2 in. scan: Locates the center and edges of wood and metal studs up to 1/2 in. (13 mm) deepStud 1 in. scan: Locates the center and edges of wood and metal studs up to 1 in. (25 mm) deepStud 3/2 in. scan: Locates the center and edges of wood and metal studs up to 3/2 in. (38 mm) deepMetal Scan: Detects metal up to 2.36 in.(60mm) deepAC Scan: Detects live unshielded AC wires up to 2 in.(51mm)deepPurpose: Quickly locate wood, metal and AC wires hidden in house walls, floors and ceilings. It can work on slats, wallpaper, wood floors, acoustic ceilings, painted walls and more. Avoid your dangers when installing TVs, cabinets, garage racks, etc.Colour: Black+SilverMaterial: PlasticPackage Contents:1 * Stud FinderOnly the above package content, other products are not included.Note: Light 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.