The Garmin GNX 20 is a 4" marine instrument centered on a first-of-its-kind glass-bonded hybrid LCD that pairs directly driven segments with a dot-matrix field — delivering crisp graphical data alongside bold primary readouts. Digits scale up to 36 mm tall and stay legible in direct sun, fading light, or darkness. With NMEA 2000 access to more than 50 vessel parameters and a power draw of just 25 mA, the GNX 20 is an especially strong fit for sailboats operating without a generator.

Specifications:

• Display size: 4" standard LCD
• Display type: Glass-bonded hybrid LCD — directly driven segments plus dot-matrix field
• Digit height: Scalable up to 36 mm
• Backlight colors: 7 customizable presets with full custom color creation supported
• Display configurations: 5 modes — single, dual, triple function, gauge, and graph
• Parameters supported: 50+ marine and vessel parameters via NMEA 2000
• Network compatibility: NMEA 2000; NMEA 0183 via optional 7-pin bare-wire cable
• Power consumption: 25 mA / 350 mW (no backlight) / 400 mW (mid-level backlight)
• Anti-glare lens: Yes
• Fog resistance: Yes — glass-bonded construction eliminates internal air gap
• Auto-scroll: Yes, user-configurable interval
• Mounting options: Included low-profile flush mount; optional flat mount available separately

In the Box:

• GNX 20 instrument
• Trim piece snap cover
• Protective cover
• Flush mount gasket and hardware
• NMEA 2000 T-connector
• NMEA 2000 drop cable
• Installation instructions
• Documentation

Note: This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.