6 in 1 Ultrasonic distance meter, Laser level,stud detector, Metal detector, voltage detector, Laser level line Measures 2 feet to 50 feet ( ... 60cm to 15m) with Laser pointer.Detects wood and metal ... Auto calibration and all function detection Operates on a 6F22, 9V battery (not included) 6-in-1 Distance Detector and Laser Level ...