Loading... Please wait...Humminbird 859ci HD DI Chartplotter Down Imaging Fishfinder Combo GPS
The 859ci HD DI Combo features a super bright LED backlit LCD 7" display. This wide screen 800H x 480V, 16:9 Color provides bright, crystal-clear images for easy viewing in harsh sunlight. The HD Down Imaging sonar with DualBeam PLUS with SwitchFire has 4000 watts PTP power output, GPS Chartplotting with built-in Humminbird ContourXD map and Ethernet Networking capabilities. Includes a unit cover, dual card reader and Instant Access Preset buttons.
Down Imaging Sonar
Humminbird Down Imaging
Sometimes, to catch fish, not only do you have to think like one, you've got to see like one. Get a fish-eye’s view of what’s happening below your boat with Humminbird® Down Imaging®. These incredible images are created with high frequency sound waves emitted
in ultra-thin slices. The sonar returns from these waves produce a “portrait.” As you patrol the water, you’ll watch fish, reefs, timber, brush, bridge pilings, rocks, and any other structure or cover pop with stunning detail.

The detailed images of Down Imaging are created with high-frequency sound waves emitted in ultra-thin slices. The sonar returns from these waves produce a "snapshot" of what's below your boat.

This view provides complete understanding of what exactly is going on below your boat. Quickly identify cover and structure with Down Imaging, while using SwitchFire® to locate and target fish. Together, they take the guesswork out of sonar fishfinding.

Here Down Imaging and Switchfire display a detailed image of a sunken sail boat.

Down Imaging / Side Imaging
Get a complete 180 degree view. Down Imaging provides incredible detail directly below your boat while Side Imaging® extends 240 feet to either side of your boat. These two detailed images are unlike anything you've ever seen.

Down Imaging / Charts
Use the split screen feature to view you lake charts with the Down Imaging sonar simultaneously.

Down Imaging / SwitchFire / Side Imaging
Don't miss a thing with these three Humminbird technologies working together. Use SwitchFire and Down Imaging together for a stright down view, while Side Imaging reaches out to both sides.
Down Imaging Sonar -- Get a fish-eye's view of what's happening below your boat. Incredible images are created with High-frequency sound waves
Switchfire
SwitchFire Sonar -- Take command of how your sonar returns appear with our Clear and Max Modes
DualBeam Plus Sonar
Two beams combine for great detail and a wide coverage area. Use the narrow beam for high-accuracy returns and bottom. Use the wide beam when you want a larger search area
Internal GPS
GPS antenna built into the head unit
Upgradeable Software
Up-gradable Software -- Access software updates to enhance the performance of your Humminbird unit through our My Humminbird section of the site
Dual Card Slots
Dual SD Card Slots -- Use one slot for advanced cartography and the other to save screenshots, sonar recordings and waypoints
High Definition Display
Provides bright, crystal-clear images for easy viewing in harsh sunlight
ContourXD Cartography
Contour XD is our built-in base map cartography that covers 3,000 US lakes with depth contours and many other locations without contours.
Ethernet
Rig up the ultimate fishing system. Use our 5-Port Ethernet switch to link together multiple Humminbird head units or share transducers.
HD Radar
In darkness and fog, busy channels and treacherous weather, situational awareness is the name of the game
AIS
Battle fish - not other boats. Humminbird's state of the art AIS technology takes the risk and guesswork out of navigating high-traffic channels or low-visibility seas.
NMEA
NMEA 2000 ready - Boat performance, weather or water conditions, make sense of it all with our networking solutions
I-PilotLink
i-Pilot Link is an integrated GPS Trolling System available on select Minn Kota Terrova and PowerDrive V2 motors which enable your motor and Humminbird to communicate