Humminbird HELIX 7 Mega SI G3N

Item No. 08232405340
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Product Description

The Humminbird HELIX 7 Mega SI G3N packs in a lot of different fishing technologies. With the Dual Spectrum CHIRP technology, you are able to know exactly what is below before casting. The narrow mode offers an image with maximum detail, while the wide mode offers maximum coverage. For viewing 125 feet to either side and below your boat, this fish finder features both MEGA Side Imaging and MEGA Down Imaging technologies. Both fish finding technologies offer a crystal-clear image of what's below. With the SwitchFire Sonar, you're able to customize how the sonar return appears on your seven-inch screen. This fish finder also features Ethernet networking to easily build a powerful, professional-grade fishing system. Be ready for the water and maximize your fishing opportunities with the Humminbird HELIX 7 Mega SI G3N.

​​​​Sonar Features:
  • Dual Spectrum CHIRP  offers two ways to search
    • Narrow mode for maximum detail
    • Wide mode for maximum coverage
  • MEGA Side Imaging offers clear viewing out to 125 ft. on either side of boat
  • MEGA Down Imaging offer clear viewing with coverage down to 125 ft. below boat
Display Features:
  • SwitchFire Sonar for customization on how sonar return appears
  • Built-in temperature
  • Single micro SD memory card slot
  • AutoChart Live creates real-time maps of your fishing spots
  • LakeMaster® compatible for access to Humminbird LakeMaster® maps
  • Ethernet networking to easily build a powerful, professional-grade fishing system
  • Bluetooth® capability to enable software updates via app and display notification on Humminbird fish finder
  • Built-in Humminbird base map offers data of costal U.S. coverage and more than 10,000 lakes for viewing underwater terrains such as buoys, hazards, contours, and more

Sonar Specs:

  • Target separation: 2.5 in. 
  • Depth Sonar: 1,200 ft. (standard transducer)
  • CHIRP Frequencies: Full mode (150-220 kHz), narrow mode (180-240 kHz), wide mode (140-200 kHz)

Display Specs:

  • Control: Keypad
  • Display Size: 7 in.
  • Display Type: Color TFT
  • Display Colors Grayscale: 16-bit
  • Display Pixel Matrix: 800H x 480V
  • Depth-Down Imaging: 480 ft. (455 kHz), 75 ft. (MEGA)
  • Range-Side Imaging: 480 ft. (455 kHz), 250 ft. (MEGA)

Power Specs:

  • Input: 10.8-20 VDC
  • Power Draw: 800 mA


  • 1-year limited manufacturer's warranty
  • Transducer
  • Power cable
  • Mounting hardware
  • Gimbal mounting bracket

Additional Information

Customer Reviews

4.8 / 5.0
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
I switched brands
I had a hook 4 elite, and hook 2 7” before buying the Humminbird. The Helix’s images are cleaner and more crisp. I got lakemaster maps and I like those better than the insight genesis. It’s easier to pick out fishing areas with the lakemaster maps. Right now Humminbird has better features and integration with trolling motor etc.
June 28, 2020
5 months ago
Very crisp screen display and easy to use. I really like the side imaging.
June 18, 2020
6 months ago
I like the unit so far, do have lot to learn, but still learning. Over all I believe it's going to beneficial in the long run. :-)
June 13, 2020
6 months ago
Don’t know why I didn’t get one sooner!
Easy to use and install, mega imaging is pretty cool.
May 28, 2020
6 months ago
Helix 7
Is everything I thought it was going to be. Easy to install and easy to use.
May 12, 2020
7 months ago
Easy to set up , first time out on fort peck with the new helix 7. What an upgrade from what I had before. I think 7 inch is the perfect size and price for a boat in my opinion, you can’t go wrong with this fish finder !
June 8, 2019
1 year ago