Audio Alert: no | Batteries Included: no | Brand Name: stanley | Color: black | Detects Metal: no | Detects Voltage: no | Height: 1.25-in. | Length: 1.375-in. | Model Number: 47-400 | Number in Package: 1-pc. | Packaging Type: clamshell | Scan Depth: 3/4-in. | Width: 1.375-in. Since 1843 Stanley tools have been on the belt and in the hands of professional contractors and accomplished homeowners. Synonymous with quality, reliability, innovation and value, Stanley is the first name in tape measures and trusted worldwide for accuracy and dependability. | Provides dependable detection of wall studs | Magnet works by locating steel nails and screws used to hold drywall to studs | Base of the stud finder is notched for convenient marking once studs are located