Specifications: The detector is 3 in 1, which can quickly find wood, metal, stud, live AC wire, etc. It has LCD screen for easy reading. With the simple structure and compact size, it is easy to operate. Item Name: Metal Detector Material: ABS Battery: 3 x 1.5V AAA Batteries (Not Included) Stud Detecting Depth: Wood: 30mm x 30mm:&le;18mm Metal Detecting Depth: Iron Pipe 25mm: &le;30mm AC Live Wires: AC 90-520V Live Wire (5cm) Frequency: 50-60Hz Operating Temperature and Humidity: -7-40 Degree Celsius,< 75% Storage Temperature and Humidity: -20-50 Degree Celsius,< 85% Features: Easy to Operate, LCD Screen Display, Portable Size: 155mm x 72mm x 28mm/6.1" x 2.83" x 1.1" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Metal Detector 1 x User Manual