Feature 13in1, scanner stud detector for wood, metal, and AC wires. It can quickly locate and indicate the live AC wires, can detect the maximum depth of 0.71in (18 mm) studs, 1in(25mm) metal, 2in(50mm) live wires. 2Easy to read, LCD digital display and continuous audible warning indicate you the position of the stud. 3Easy to use, after the battery is installed, there will be a long beep when it is turned on. When it is automatically turned off, press the test button for 2 seconds to turn it on again. 4Compact design, easy to carry and use, when the battery power is too low, the detector will send out a reminder. 5There is an antiscratch pad on the back of the detector to prevent the product from scratching and affecting the appearance.Item Type: Metal DetectorMaterial: ABSWeight: Approx. 202g/7.1ozProduct Size: Approx. 17.5 x 8 x 3cm/6.9 x 3.1 x 1.2inBattery: 3 x AAA 1.5V Battery (Battery Not Included)Stud Detection Depth: Wood: Approx. 30 x 30mm/1.2 x 1.2inMetal Detection Depth: Iron Pipe: Approx. 25mm/1inAC Live Wire Detection Depth: Approx. 50mm/2in (AC 90-250V Live Wire), Frequency 50-60HzWorking Temperature and Humidity: -7-40, <75%Storage Temperature and Humidity: -20-50, <85% .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Metal Detector (Battery Not Included)1 x InstructionNote1. Please allow 0‑2 cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.