The fully waterproof Humminbird 999ci HD SI Combo sonar fish finder has a wide variety of features for finding fish in multiple locations. The screen is eight inches wide, and consists of a 480V x 800H pixel high definition full-color LED display that is in a 16:9 ratio. Side Imaging Sonar and Down Imaging Sonar allow for clear images of structure and fish, and also give coverage of a 240 foot section that can be seen from either side of a boat, for a total of 480 feet from side to side, along with the downward two dimensional high frequency sonar capabilities to identify structures and fish that are beneath the boat. The DualBeam PLUS sonar puts out up to a maximum of 8000 Watts of PTP power with options to view the beams side by side, blended, or separately. A 60° beam gives large fish coverage, and can locate fish on the bottom with high detail. SwitchFire Sonar is capable of targeting fish to a depth of 1,500 feet and it includes max mode, clear mode with Time Variable Gain (TVG) software, and three color palettes to handle all conditions of light exposure.
The internal color GPS system has a 50 channel receiver, and offers ContourXD mapping for chart plotting and advanced capabilities that allow for marking locations directly on the screen. As many as 2,500 points and 45 routes can be programmed into the GPS. GPS and sonar data can be shared between two units by using the Ethernet port, and are compatible with 360° imaging and trolling systems. The pre-loaded ContourXD maps include more than 3,0000 United States Lake locations and major ports, roads, interstates, and markers and also give location for drops and channels.
Also included are dual SD card slots, True Arch Technology, instant image update, sonar recording, GPS speed, and selective fish ID+. Display color can be selected, and with the optional 200/50 kHz transducer the depth capability increases to 3,000 feet. The transducer is included with a transom mounting type and temperature. Additional features include recording split screen, snap shop onto the memory card, bottom lock, and a unit cover. You can get a great deal on Humminbird 999ci HD SI here.
| Lowrance HDS-7 Touch Insight | Humminbird 999ci HD SI | Garmin GPSMAP 840xs | |
|---|---|---|---|
 |  |  | |
| Screen Size | 7 in | 8 in | 8 in |
| Screen Resolution | 480 x 800 pixels | 480 x 800 pixels | 600 x 800 pixels |
| Display Type | Widescreen, 16:9 ; WVGA color TFT LCD | 16:9 Color | color SVGA |
| Touchscreen | Yes | No | No |
| Imaging | 2D, DownScan, StructureScan, Downscan Overlay | 2D, Down Imaging, Side Imaging | 2D, Down Imaging (Side Imaging available with GVC box sold separately) |
| Transducer Type | Transom Mount/Trolling Motor | Transom Mount/Trolling Motor | Transom Mount/Trolling Motor |
| Transmit Power | 31W Broadband RMS (analog equivalent 3200W) 250W Broadband Peak-to-Peak (analog equivalent 30,000W) | 1000W RMS 8000W Peak-to-Peak | 1 kW traditional 600 W CHIRP |
| Sonar Frequency | (50/200 or 83/200 kHz) + 455/800 kHz | 83/200 kHz 2D 455/800 kHz Side Imaging | 77/200 kHz 2D Also supports 50/200 dual frequency transducers |
| Maximum Depth | 5000 ft / 1524 m | 1500 ft 2D 150 ft Side Imaging | 1,750 ft @ 50 kHz, saltwater, Garmin dual freq transducer @ 500 W 2,700 ft @ 50 kHz, saltwater, Airmar B260 transducer @ 1000 W |
| GPS Antenna Type | Internal, high-sensitivity GPS+WAAS | Internal | Internal |
| Waypoint Storage | 5000 | 3000 | 500 |
| Routes | 200 | 50 | 100 |
| Plot Trails | 10 tracks, 12,000 points | 50 tracks, 20,000 points | 50 tracks, 50,000 points |
| Default Maps | Expanded U.S. BaseMap or Insight USA | Humminbird ContourXD | U.S. LakeVu and BlueChart g2 coastal maps |
| MSRP | $1549 | $1499 | $1499 |
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