Description: Versatile Detection Modes: The HW QB6 Handheld Stud Find comes with multiple detection modes, including 1/2" Stud Scan for detecting wood or metal studs up to 13mm deep, 1" Stud Scan for up to 25mm deep, and 1 1/2" Stud Scan for up to 38mm deep. It also features a Metal Mode that detects metal up to 80mm or 60mm deep, and Ac mode that detects live unshielded AC wires up to 51mm deep.Advanced Features: This Wall Detector is equipped with a Metal Depth Indicator and a Green Backlight for easy reading. It also has a Low Voltage Indicator that alerts you.Automatic Shutdown: The Handheld Stud Detector automatically shuts down after three minutes of inactivity.Material: The Wall Metal Detectors is made of electronic components, which is sturdy and can be used for a long time.Compact Size: This handheld detector measures 7.68inchx3.46inchx1.50inch making it compact and portable enough for job site or DIY project at home. Specification: 19.5cmx8.8cmx3.8cm/7.68inchx3.46inchx1.50inch Size Chart: Battery Type:9V battery(6F22)Operating Current: