Whites TreasurePro Metal Detector with 10" DD Waterproof Coil and Bullseye II Adjustable Length: 46" &gt; 51" All Metal Audio: VCO Audio Output: Speaker & 1/4" Headphone Batteries: 2 - "AA" Battery Life: 20 Disc Audio: Threshold Optional Coils: Coinmaster Family Standard Coil: 10" Number of Presets: 6 Frequency: 7.8 kHz Size: 10" Configuration: Double D Ground Balance (Automatic) with Tracking Features 8 Audio Tones 6 Search Modes 49 Target ID Segments 10" Double D search coil Adjustable arm rest Adjustable Discrimination All-Metal Operation Automatic Ground Balance Beach Mode Complete Versatility Full Two-year Warranty Lightweight Pinpoint Mode Threshold Volume Control Waterproof Search Coil Weather Resistant