We gave our stud finder scanner a larger LCD display. shape of this scanner allow you to get a firm, comfortable grip. Instead of guessing where to make a hole, you can scanner our portable stud finders to find the proper place; avoiding having your walls Swiss cheese. wood wall stud finders are equipped with 3 scanning modes:edges of wood and metal studs and AC scanning mode detects live.The built in automatic calibration provides you reliability and accuracy every time. Use beam finders on pipe locators, hang pictures, art, shelves, or cabinets, mount a flat screen TV, and other home renovation projects on the walls or ceiling. Colour:black Material: ABS Package Contents: 1 x stud finder 1 x bag 1 x English manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.