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The 798ci HD SI is a high-end electronic fishfinder from the Humminbird company.

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Pros

larger collection of maps built into the unit than one person could ever use

1 agrees

phone support from Hummbingbird is very helpful and informative

1 agrees

graphics are easy to read and clear

1 agrees

sonar covers a wide angle below the boat, don't have to be exactly directly above a fish to find it

1 agrees

can see the display easily even in direct sunlight

1 agrees

easy enough to use for complete non-technical users

1 agrees

alarm on the depth finder comes in handy often

1 agrees

software updates available through an SD card, installs flawlessly

1 agrees
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The 798ci HD SI is a high-end electronic fishfinder from the Humminbird company. Fitted with a 50-channel GPS unit that includes 3000 waypoints for track and chart plotting, this model is intended for professional-level anglers hoping to improve their accuracy and efficiency. SideImaging sonar technology provides clear, picture-like images of underwater surroundings through advanced digital surveillance, working in conjunction with DualBeam Plus coverage enhancement to provide over 500 feet of trackable space from a single spot. Promising structural data can be freeze-framed and marked for approach, with instant image updating available to minimize latency in high-speed pursuits. Selective fish identification is also available for enhanced focus on specific life-form types, while sonar recording and still-image functions enable users to capture a given excursion for later reference. The unit may be attached to the transom of a watercraft via the included quick-disconnect clamp, but is also suitable for longer-term in-dash mounting. Speed and temperature information may be toggled on and off for increased information on a given area, with an integrated backlight for nighttime fishing applications. A one-year manufacturer warranty is included. 

Features
  • 5-inch HD LCD display
  • 50-channel GPS connectivity
  • SideImaging sonar technology
  • Sonar recording capability 
  • Freeze-framing with structure marking
  • DualBeam Plus coverage booster
  • InterLink networking support
  • TrueArch data processing technology
  • Split-screen zooming
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