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The Humminbird 788ci HD Combo is a mid-cost fishfinder.

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versatile functionality, can do a lot once you get used to it

1 agrees

preset buttons save a lot of time, make operation easier

1 agrees

can easily read the screen in bright light

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quick release mounting makes it easy to put it away

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  • Only 3 words are allowed.

need a manual to cover the full range of the unit's functionality

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menus are awkwardly set up, takes longer to find what you need than it should

1 agrees

maps shipped with the unit tend to be older, worth going out and getting a newer Navionics card

1 agrees
  • Only 3 words are allowed.


The Humminbird 788ci HD Combo is a mid-cost fishfinder. This fishfinder has a Selective Fish ID+ feature, which uses advanced sonar processing to interpret sonar returns. When a fish meeting your requirements is detected, a fish icon and its depth are displayed above the return. Three different fish icons represent intensity of the sonar return, and provide an indicator of relative fish size. The instant image update of this fishfinder helps to ensure that the information on the 788ci HD Combo's screen is accurate in terms of where your boat is as you move. These features are shared with the lower cost 587ci HD Combo model, which differs from this model only in that it lacks the 788ci HD Combo's Ethernet networking ability, which allows you to share views, transducers, GPS positions, and other aspects with other anglers.

  • GPS Speed Included
  • Backlight
  • Waterproof
  • Quick Disconnect mount
  • Dimensions: 6.9" x 7.5" x 4.5"
  • Optional In-dash mount
  • Transducer: XNT-9-20-T
  • Transducer Mounting: Inside Hull or Transom
  • Power Input: 10-20 VDC
  • Power Draw: 615mA
  • Switchfire Sonar
  • Screen Snap Shot to Memory Card
  • Sonar Recording
  • Split Screen Zoom
  • Split Screen Bottom Lock
  • Wide Narrow Cone Split Screen
  • Instant Image Update
  • Freeze Frame with the ability to Mark Structure on Sonar
  • Selective Fish ID+
  • Real Time Sonar RTS Window
  • Sonar Echo Enhancement
  • TrueArch Technology
  • 3D Chart View
  • Large Digits View
  • Custom View Selections
  • Custom Digital Readout Selection
  • Selectable Display Colors
  • Selectable Background Colors
  • View Preset Keys
  • Temperature Alarm
  • Triplog
  • X-Press Menu System

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