The Garmin GMI™ 20 Marine Instrument Display (Part Number 010-01140-00) is a premium, multi-functional glass helm digital instrument designed to display critical navigation, environmental, wind, depth, and engine data for both power and sail vessels. Featuring a bright 4-inch color display with a 170-degree wide viewing angle and an anti-glare glass-bonded lens, it prevents internal fogging and ensures exceptional legibility from anywhere at the helm. The unit incorporates a customizable user interface capable of displaying over 100 marine parameters, including speed, depth, water temperature, wind angle, GPS data, fuel levels, and vessel telemetry across digital gauges, analog-style meters, and graphical trend plots.

Housed in an IPX7 waterproof chassis engineered for rugged marine environments, the GMI™ 20 includes high-contrast color schemes—including full-color, black-on-white, red-on-black night mode, and green-on-black night mode—to enhance visibility under direct sunlight or low-light night operations. It interfaces seamlessly via NMEA 2000® networks and NMEA 0183 inputs, allowing effortless integration alongside Garmin autopilots, transducers, and chartplotters. Powered directly by the NMEA 2000 bus with a Load Equivalence Number (LEN) of 6, the instrument supports auto-scroll profiles, versatile flush or flat mounting options, and includes interchangeable snap-on trim covers to match modern glass helm console aesthetics.