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Humminbird  997c SI Combo, a side imaging sonar fish finder and external GPS combo device. The unit features a 8-inch 800×480 LCD display, Side Imaging and DualBeam PLUS sonar with up to 8000 Watts PTP power output, GPS Chartplotting with built-in UniMap, and advanced Fishing System capabilities.

The 997c SI Combo uses revolutionary 800 kHz side-imaging sonar with 180-degree coverage to 360 feet to either side and 150 feet down, as well as DualBeam PLUS sonar with 20- and 60-degree beams for both wider coverage and better bottom definition down to 1500 feet. It comes with an external, 16-channel WAAS/EGNOS GPS receiver, and a built-in UniMap of USA inland lakes, rivers, and coastal areas.

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