Humminbird Helix 12 CHIRP G3 Sonar


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The largest unit in the Helix family, the Huminbird Helix 12 CHIRP G3 Sonar boasts a commanding 12.1” display, MEGA Side Imaging+ (select models), MEGA Down Imaging+ (select models), and Dual Spectrum CHIRP Sonar for a cleat-cut technological advantage on the water. The Humminbird Helix 12 CHIRP G3 Sonar also includes GPS mapping, built-in Bluetooth, Ethernet networking capabilities, and ability to create your own maps in real-time with AutoChart Live’s depth, vegetation and bottom hardness mapping. Humminbird Basemap cartography is built-in with the option to expand your mapping capabilities with available LakeMaster Charts.

NEW MEGA Side Imaging+ (select models) – See the world below like never before with crystal clear viewing out to 200-feet on either side of your boat. You’ll unlock new detail with up to 3X more output than standard Side Imaging sonar.

NEW MEGA Down Imaging+ (select models) – Get unprecedented underwater clarity with coverage down to 200-feet below your boat. You’ll unlock new detail with up to 3X more output than standard Down Imaging sonar.

Dual Spectrum CHIRP – Before you cast, know what’s down there thanks to long, well-defined fish arches, and a clear view of fish-holding structure and the bottom. Powered by Humminbird’s proprietary, Low Q CHIRP transducer, Dual Spectrum offers two ways to search: wide mode for maximum coverage and narrow mode for maximum detail.

SwitchFire Sonar – Take command of how your sonar returns appear. With two display modes, you can add or remove detail, account for water depth, temperature, and turbulence, even watch lure presentation – all at the push of a button.

Humminbird Basemap Built–in – Humminbird’s enhanced standard basemap provides you with a clear view of underwater terrain and surrounding points of interest, so you can fish and navigate with total confidence. Identify buoys, day markers, hazards, marinas, contours, depth markers, and much more. Includes charts of more than 10,000 lakes, plus coastal coverage for the U.S.

AutoChart Live – Create real-time maps of your fishing spots, with access to patented Humminbird LakeMaster features. Map depth contours, bottom hardness, and vegetation as you drive you boat, with eight hours of built-in recording time.

Ethernet Networking – High-speed Ethernet allows you to build a powerful, professional-grade fishing system. Easily connect multiple fish finders, or upgrade to add-on technologies, like Minn Kota i-Pilot Link, 360 Imaging, and CHIRP radar.

Bluetooth – Enable features like wireless software updates from the Humminbird FishSmart App and also keep your phone out of the water and in your pocket by displaying notifications on your Humminbird. Additionally, you can take control of your most-used features with an optional Bluetooth remote (RC2).

LakeMaster Compatible – Upgrade to the unrivaled accuracy and detail of Humminbird LakeMaster maps. From east-to-read contours, to highlighted depth ranges and adjustable water levels, you’ll have all the tools you need to make every moment count.


-Mounting hardware
-Power cable
-Gimbal mounting bracket
-Transom (select models)


Display – 12.1"
Sonar standard – Dual Spectrum CHIRP
Display pixel matrix – 1280H x 800V
Interface – keypad control
Memory card slot – Dual SD
Power Draw – 1.75 Amps
Power Input – 10.8-20 VDC
Waypoints, routes, tracks/point – 2,500, 47, 50/20,000
Please Note: 

-CHO (Control Head Only) unit does not include transducer.
-This item is not available for order outside of the United States.

Transducer Included
MEGA Down Imaging+
MEGA Side Imaging+

Helix 12 DS GPS G3N

Helix 12 MDI+ GPS G3N

Helix 12 MDI+ GPS G3N CHO

 Helix 12 MSI+ GPS G3N

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WarningWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to

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