Features: 1. Made of high-quality materials, not easy to break, can be used for a long time, durable. 2. Metal wood stem center detector, with the function of detecting metal and voltage wires. 3. It is used to detect the central position of metal or wood stems in the wall. In addition, it can detect the metal and voltage functions in the wall, and whether the wires in the wall are charged. 4. The direction of target will be shown on the LCD screen.The sound warning will be louder while the target is closer. 5. Easy to use: Turn on the stud finder, place it flat on the wall, press the scan button to calibrate. Notice: 1.Actual color may be slightly different from the image due to different monitor and light effect 2.Please allow 1-3cm deviation due to manual measurement Size: 167*78mm Specification: 1. Quickly detect the center of the stem 2.LCD display, easy to read 3. Detectable wood metal stems with wall thickness within 1 1/2 inches (38 mm) 4. Detectable metal pipes with wall thickness within 2.36 inches (60 mm) 5. Detects live wires in walls up to 2 inches (51 mm) thick 6. All detection functions have automatic correction function 7. Operated by 1 6F22 9V battery includes: 1 x Stud Finder (Not include battery)