Garrett Ace 150 Metal Detector with Waterproof Coil NIB + HEADPHONES Garrett ACE 150 Metal Detector with Waterproof Search Coil and Headphones! Coin Depth Indicator to determine target depth Low Battery Indicator: icon remains on when batteries become weak Headphone Jack: quarter-inch (1/4") size Interchangeable ACE series searchcoils: are available Large LCD Screen with easy-to-read Target ID Legend Pushbutton Controls: with One-Touch operation 3-piece Travel/Storage: disassembles to 24" Adjustable Arm Cuff