This is electronic sensor, made of good material and advanced technology, with excellent functionality and long-term durability, and . It can detect studs, metals, wires, etc. in the wall, which brings great convenience to your work. Features - Material: ABS. - Battery: 6F22 9V battery (not included). - Whether you are a professional, homeowner or a DIY enthusiast, you can find great use in this electronic scanner. - This wall scanner includes 5 different scanning modes for metals, wires and deeply embedded objects behind floor, ceiling, wall. - The fast detection saves users time and efforts, making the task completion easier. - The ergonomic design of this makes it comfortable to hold from any angle. - It is simple , but it's practical to use, which will give you a good use experience. Package list: 1 x detector 1 x manual