Evidence Recovery Metal Detector, CSI Pro, ABS Plastic; Aluminum Material, Inside Width (In.) 11 in, Exterior Length (In.) 43 to 56 (Adjustable), Exterior Width (In.) 11 in, Exterior Height (In.) 56 in, Exterior Depth (In.) 9 in, Weight (Lbs.) 2.8 lb, Audio Alarm Tone & Volume Adjustable, Operating Frequency (Hz) 15 kHz, Max. Operating Temp. -35 Degrees to +158 Degrees F, Scans Designated Area, LCD/Audio Indicator, (4) AA Batteries Battery