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- Details & Specs
Humminbird® 678c HD Sonar. Get an eye-opening picture of the action below, in bright, backlit color!
Beam Me Up!
DualBeam PLUS Sonar - 2 beams and the best of both worlds! A narrow beam is optimized for bottom and structure detail below your boat, while a wide beam casts a wider net, searching for fish and structure around your boat. View them side-by-side onscreen or combine the images into 1 comprehensive view!
Light a Fire Under Your Boat
SwitchFire - Gives you a real time, customized look below the water's surface with 2 different modes: "Max Mode" and "Clear Mode". Clear Mode filters out noise (suspended particles, etc.) in agitated or shallow (8' or less) water for a clearer image of fish and structure. Max Mode for incredible detail and easy lure monitoring. See cover, structure, fish, even thermoclines and water currents. Keep an eye on your bait or jigging action for the best lure presentation.More advanced sonar features:
- Split Screen Zoom increases the displayed resolution to separate sonar returns that are very close together
- Split Screen Bottom Lock
- Wide / Narrow Cone Split Screen separates the sonar data using the two primary user selectable down-looking beams simultaneously in split screen
- Instant Image Update... the sonar chart updates in real time to show the latest information on the sonar screen
- Freeze Frame with the ability to mark structure on sonar. Inspect and mark submerged structure, bait fish, and underwater contours with special Sonar Cursor
- Sonar echo enhancement
- Screen snap shot to memory card
- Real Time Sonar Window always updates at the fastest rate possible and shows only the returns from the bottom, structure, and fish that are within the transducer beam. Displayed on the right side - adjust the window to narrow, wide or off
- X-Press Menu System provides quick access to the settings most frequently used
- 3D Chart View
- Large Digits View provides digital data in a large, easy-to-see format
- Custom View Selections allows you to see only the views that you want, giving you the flexibility to access the information you need quickly and easily
- Custom Digital Readout Selection allows customization of digital readout
- Temperature Alarm allows you to preset and display an alarm when a desired temperature is reached
- Selectable display / background colors
- 1,500' max depth
- 5", 640V x 480H, 256-color TFT backlit display
- DualBeam PLUS Sonar Coverage: 200 kHz / 20° @ -10db 83 kHz / 60° @ -10db
- Target Separation: 2 1/2"
- Power Output (RMS): 500 Watts Power Output (Peak to Peak): 4,000 Watts
- Speed: Capable with GPS connected (GPS not included)
- Quick Disconnect mount
- 7"w. x 7 1/2"h. x 4 1/2"d.
- Transducer - Standard: XNT-9-20-T
- Power Input: 10-20 VDC
- Power Draw: 615mA.
- Frequently Asked Questions
- Articles & Tips