Meet the Garmin GNX21 Instrument Display—the glass-bonded powerhouse built for serious sailors and anglers who demand clarity, versatility, and hands-free data on deck. Its inverted display features large, high-contrast digits on a black background, with digits scalable up to 36 mm, so depth, speed, wind, and more than 50 marine and boat parameters are always easy to read daytime or night.
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Glass-bonded, anti-glare display: prevents fogging and ensures exceptional visibility in bright sun, dusk, or darkness.
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Directly driven LCD segments with a dot-matrix field: combines clear numerical data with graphical information for a comprehensive at-a-glance view.
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Low power consumption: optimized for off-grid sailing—about 25 mA (350 mW) without backlight and 400 mW with mid-level backlight at night.
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Auto-scroll for hands-free operation: automatically cycles through data screens at your chosen pace, keeping both hands on deck.
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Customizable user profiles: 5 display configurations for sailboats or powerboats, including single, dual, triple function, gauge, and graph modes to show wind, depth, speed, and other essential data.
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Custom color backlighting: choose from 7 backlight colors or create a personalized color for optimal readability in your cockpit.
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NMEA 2000 compatibility: monitor 50+ marine and boat parameters—GPS speed, depth, temperature, wind direction and speed—directly from the NMEA 2000 bus. Optional 7-pin cable supports NMEA 0183 devices.
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Flexible mounting options: includes a low-profile flush mount and an optional flat mount for a sleek, glass-helm look.
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Compact, capable hardware: 4.0" diagonal display (11 cm), 11 cm × 11.5 cm × 3 cm, weighs 230 g, and operates from −15°C to 70°C (5°F to 158°F).
Whether you’re cruising, racing, or fishing, the GNX21 delivers crisp, reliable data with a user-friendly interface, customizable views, and energy-efficient performance—so you can focus on the water and navigate with confidence.
