Garrett Waterproof submersible AT Pro Digger's Special Features Pro Mode Audio: Proportional Audio and Tone Roll Audio features allow the user to hear characteristics of a target as they would in a True All-Metal Mode. High-Res Iron Discrimination: Use touch pads to set iron discrimination in one of 40 levels for precise ability to separate good targets from trash. Digital Target ID: 0 to 99 Target ID scale offers increased ability to distinguish one target's conductivity from another. Iron Audio: Allows the user to hear discriminated iron and to alter the detector's mid-tone signal's range Fast Recovery Speed: Allows greater ability to pick out good targets amongst trash All Terrain Versatility: Weatherproof housing designed for dusty, humid or wet environments; unit can be submerged to a maximum 10-foot depth. 15 kHz frequency: improved detection of small targets, gold nuggets, jewelry Ground Balance: automatic and manually adjustable for improved performance Graphic Target Analyzer (GTA): identifies target's conductivity Continuous Coin Depth Indicator: to determine target depth Battery Condition Indicator: shows battery life continually Depth Indicator: Continually shows depth of coin-size objects. Battery Condition Indicator: Shows batter life continually. Search Modes (Discrimination Patterns): 6 plus electronic pinpointing. Specifications Target ID Cursor Segments: 12 (notchable) Iron Discrimination Segments: 40 Accept/Reject Discrimination: Yes Search Modes: 6 (3 Standard, 3 Pro modes) Sensitivity/Depth Adjustments: 8 Electronic Pinpointing: Yes Frequency: 15 kHz Audio Tone ID Levels: 3 Standard Search Coil: 8.5" x 11" DD PROformance Length (Adjustable): 42" to 51" (1.06m - 1.29m) Total Weight: 3.03 lbs. (1.4 kgs.) Batteries: 4 AA (included) Warranty: 2 Year, Limited Parts/Labor