Humminbird 688ci HD DI Chartplotter Fishfinder Combo
$198.00
Humminbird 688ci HD DI Chartplotter Fishfinder Combo combines Down Imaging & DualBeam PLUS with a 5-inch display and integrated GPS mapping. It is built to show sonar returns, structure, and chart data together for more confident navigation and fishing decisions.
Overview Humminbird 688ci HD DI Chartplotter Fishfinder Combo
Humminbird 688ci HD DI Chartplotter Fishfinder Combo combines chartplotter and fishfinder functions in one marine unit, making it easier to read sonar returns and navigation data from the same screen. Built around a 5-inch display, the 640V x 480H (HD Color TFT) display is matched with Down Imaging & DualBeam PLUS so the unit can support both route decisions and fishing setup.
Humminbird 688ci HD DI Chartplotter Fishfinder Combo is especially useful for operators who want one display to manage navigation, waypoint work, and sonar interpretation without moving between separate devices. Internal 10Hz High-Speed Precision; 350 ft (DI) / 600 ft (DualBeam PLUS).
Key Features
- Display clarity: Uses a 5-inch display with 640V x 480H (HD Color TFT) so sonar, charts, and system data remain easier to read from the helm.
- Sonar capability: Down Imaging & DualBeam PLUS. Adds a tighter view below the hull for reading structure, edges, and bottom changes.
- Positioning: Internal 10Hz High-Speed Precision keeps chart position and waypoint updates responsive for navigation and return-to-spot accuracy.
- Depth performance: 350 ft (DI) / 600 ft (DualBeam PLUS) shows the sonar range and conditions the model is intended to handle.
- Marine-ready construction: IPX7 Standards supports use in exposed marine environments.
Applications
This model suits anglers who focus on bottom detail, drop-offs, brush, and vertical structure rather than wide side-scanning coverage. Down Imaging helps separate hard bottom, cover, and fish targets more clearly beneath the hull, which is useful for freshwater structure fishing and precision presentations.
Because mapping and sonar are handled in the same unit, it also works well for running between spots while keeping navigation and fishfinding in one place.
Specifications
| Display Size | 5.0 inches Diagonal |
| Display Resolution | 640V x 480H (HD Color TFT) |
| GPS Receiver | Internal 10Hz High-Speed Precision |
| Sonar Technology | Down Imaging & DualBeam PLUS |
| Power Output | 500 Watts (RMS) / 4000 Watts (PTP) |
| Depth Capability | 350 ft (DI) / 600 ft (DualBeam PLUS) |
| SwitchFire Sonar | Clear and Max Modes Included |
| Waterproof Rating | IPX7 Standards |
| Memory Storage | 2,500 Waypoints / 45 Routes |
| Product Warranty | 1-Year Limited Manufacturer Warranty |
What’s Included
- Humminbird 688ci HD DI Display Unit
- XNT-9-DI-T Transom-Mount Transducer with Temperature
- Tilt and Swivel Quick Disconnect Mounting System
- Power Cable (6 ft)
- Installation Hardware and Mounting Gasket
- User Manual and Documentation Pack
Frequently Asked Questions About Humminbird 688ci HD DI Chartplotter Fishfinder Combo
What is Humminbird 688ci HD DI Chartplotter Fishfinder Combo designed for?
Humminbird 688ci HD DI Chartplotter Fishfinder Combo is designed for boaters who need charting and sonar in one helm display. It combines 5.0 inches Diagonal display with Down Imaging & DualBeam PLUS to support navigation, fishfinding, and everyday helm decisions.
What key functions make this unit practical on the water?
This display is described with 5.0 inches Diagonal display with 640V x 480H (HD Color TFT) resolution; Down Imaging & DualBeam PLUS; Display clarity. Those details make it easier to read navigation data and interpret underwater information during normal use.
What connectivity options are available for this chartplotter?
This unit includes Internal 10Hz High-Speed Precision; 2,500 Waypoints / 45 Routes, which supports data sharing, position updates, or system expansion when those functions are listed for the model. That can be useful for owners who want charting, sonar, and connected onboard information working together.
Is this chartplotter practical for everyday helm use?
This marine display is described for active marine use, where clear visibility, responsive operation, and straightforward access to key data matter throughout the day. The listed IPX7 Standards supports easier viewing and more confident operation in changing marine conditions.
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