Locates quickly center of the frame under the surface. Locates wood and metal frames. Three searching depths: 13mm, 25mm and 38mm. Metal location up to 60mm. Electric wire location up to 51mm. Automatic calibration for all functions. LCD display with backlight. 9V battery (not included) Product size: 7,0 x 3,0 x 16,5cm. Weight: 140g