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Garmin GNX 120 7-inch Large Format Marine Instrument

Create a High-performance Glass Mast

  • High-precision glass-bonded backlit LCD display avoids fogging
  • Bold 2-inch (51 mm) digits are the largest digits in class
  • Provides the data necessary to make confident decisions
  • Displays more than 50 marine and boat parameters for wind, sea and vessel conditions
  • Integrated sailing eco-system allows seamless sharing of sailing data between Garmin devices

Designed for serious sailors who demand quality, precision and total integration, this high-precision glass-bonded 7-inch large format instrument creates a beautiful “glass mast” display with superior readability day and night. It allows seamless sharing of sailing data between Garmin devices and is controlled from a compatible GNX keypad. It is easy to set up, calibrate and use.

Superior Readability

Enjoy superior readability in all conditions, day and night¹. Options for white or color 2-inch (51 mm) digits — the largest in class — allow you to adjust for most preferred visibility setting for any lighting condition. The GNX 120 provides a flush mount glass mast look, and its glass-bonded high-contrast monochrome LCD display avoids fogging. Low power consumption of 0.36 W daylight with no backlight and 0.4 W nighttime with mid-level backlight preserves your batteries.

Customize Your Profile

Fully customizable user profiles allow you to configure the screen layout to your preferred setting. Five display configurations are available: single, dual and triple function, plus Gauge and Graph modes, to display data for more than 50 important marine parameters for wind, sea and vessel conditions. Display data from Expedition software on the instrument using a Actisence NGT-1 N2K USB or GND 10 (not required). Adrena and SmartSkipper information can also be displayed using the GND 10.

¹Color backlight is not visible in daylight.

Garmin GNX 120 Specifications
Unit dimensions, WxHxD:
181 x 115 x 17 mm (7.12'' x 4.53'' x .67'')
Display size, WxH:
150 x 83 mm (6'' x 3.27'')
Display type:
Inverted LCD, monochrome
380 g (13.4 oz)
Power consumption
0.36 W (day); 0.4 W (night)
Mounting options
Glass bonded display
Temperature range
From 5° to 158°F (from -15° to 70°C)
Instrument Features
User profiles
Note for NMEA 0183 compatibility
Yes (when data is bridged over NMEA 2000 from another device, no direct NMEA 0183 connection)
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user's manual
Garmin nuvi 3750 Accessories

gnx 120

Package includes:
GNX 120
Trim piece snap cover

Protective cover
Flush mount gasket and hardware
NMEA 2000 T-connector
NMEA 200 drop cable


pdf Garmin GNX 120/130 Installation Instructions
pdf Garmin GNX 120 Flush Mount Template

gnx 120

gnx 120

Garmin GNX 120 7" Large Format Marine Instrument

Garmin GNX 120 | Marine Instrument | Marine Display

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