Features: Stud detector adopts the upgraded Sensor Technology for accurately & quickly locating studs wood metal AC wires. This digital stud finder wall scanner features large LCD display together with clear sound warning helps find stud center and stud edges easily . This stud locater has multi-function. When you scan the floor, ceiling, wood behind the wall, beams, joists, metal, AC wires or buried objects, the wall metal detector will be your personal assistant, easy to locate. Design of the stud finder wall scanner fits your palm perfectly, which satisfying most of your DIYs and home projects. Instead of tapping a hammer against the wall or, worse, just guessing where to make a hole, you can use our portable stud finders & scanners to find the proper place. Package Includes: 1X Stud Finder Specifications: Material: Plastic Size: 18.5x8x2.3cm/ 7.28x3.15x0.91 in Power: 9V battery (excluded) note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.