Fisher Gold Bug Metal Detector w/5in DD Search Coil Black Standard. Its fast retune speed and biaxial Searchcoils create superb target separation with impressive depth. V-Break the industry's first Variable Breakpoint tone discrimination system allows user control of the multi-tone Audio ID system. This feature helps distinguish iron targets with a distinctive low audio tone while non-ferrite targets like gold induce high tones. Tone discrimination combines with a dead-accurate Visual ID system to give gold prospectors a vital new tool in finding gold without having to dig any iron targets. An expanded 40-Point Iron ID target range helps differentiate between larger iron objects and smaller nails and pieces. The way it minimizes the masking effects of ferrous targets near non-ferrous targets is simply amazing Specifications for Fisher Gold Bug Metal Detector: Manufacturer: Fisher Included Accessories: Standard Water Resistance Level: Waterproof Coil Finish: Black Battery Type: 9v Battery Life: 15 - 20 hours Battery Quantity: 1 Weather Resistance: Waterproof Features of Fisher Gold Bug Metal Detector Threshold and Gain Adjustments 1/4 and 1/8-Inch Headphone Jacks 1 - 9V Power Supply Lightest Weight/Best Ergonomics in the Industry 2 Search Modes: All Metal and Discriminate Large LCD Screen with 0-99 Numeric Target Identification Display Large Target Alert Depth Readout and Running Signal Strength Indicator No-Motion Pinpoint Computer Assisted Ground Grab Ground Grab Computerized Ground Balancing 2 Tone Super Sensitive 19 kHz Recommended for Gold Nugget/Prospecting Package Contents: Fisher Gold Bug Metal Detector Fisher GOLDBUG: Gold Bug Metal Detector w/5in DD Search Coil Black Standard