"The MineLab Equinox 800 Metal Detector combines advanced technology with a powerful waterproof 11"" Double D search coil to search lots of ground quickly. Multi-IQ technology simultaneously utilizes multiple frequencies to detect large and small metal targets in all types of soils, with more accurate readings. SFx8 provides 5 selectable frequencies to optimize your search, while 4 detection modes (park, beach, field, and gold) let beginners zero in on specific locations. Automatic and manual ground balance along with 125 levels of sensitivity adjustments reduces interference. Notch discrimination includes 50 segments: 10 ferrous and 40 nonferrous. 5 levels of depth readout and pinpoint technology. Monochrome LCD is backlit for easy readability in any light conditions. Adjustable shaft (47""-57"") fits a wide range of users. Comes with headphones. Low-battery indicator. Runs on rechargeable lithium ion battery (included). 2.96 lbs. Mfrs. 3-year limited warranty on the detector and 2-year limited warranty on the battery.Manufacturer model #: 3720-0002. Powerful metal detector with advanced search features 11"" waterproof Double D search coil Multi-IQ uses high and low frequencies at the same time SFx8 provides 5 selectable frequencies in one machine 4 detection modes Automatic and manual ground balance 25 levels of sensitivity adjustments Notch discrimination Easy-to-read backlit monochrome LCD Adjustable shaft for a perfect fit Rechargeable battery"