See all essential data on a sleek, high-resolution color display with the intuitive GMI 40 from Garmin

OLATHE, Kan./Sept. 1, 2026/PR Newswire – Garmin (NYSE: GRMN), the world’s largest and most innovative marine electronics manufacturer, today unveiled the GMI 40 multipurpose marine instrument that displays live boating insights in an easy-to-read format. Boasting a modern, streamlined design that complements Garmin GPSMAP chartplotters, the device has an intuitive touchscreen interface with edge-to-edge glass on a 4.3-inch, high-resolution, color LCD display. The touchscreen optimizes space for a clear, uninterrupted view of instrumentation data, keeping sailors, cruisers and coastal anglers informed throughout the trip. 

“Whether sailing, fishing the coast or cruising for the weekend, you need a compact instrument that’s simple to operate and fits cleanly at the helm. Our new GMI 40 delivers that and more with a modern display that networks seamlessly across Garmin’s marine products, putting the real-time data you rely on in one place.” — Susan Lyman, Garmin Vice President of Global Consumer Sales & Marketing

Smooth integration

The cutting-edge GMI 40 integrates with compatible devices on board via the NMEA 2000 network and the Garmin BlueNet network. The powerful marine instrument also has wireless connectivity with gWind wireless sensors, marine remote controls and Garmin quatix marine smartwatches, allowing for easy sharing of data.

Mariners can also keep their GMI 40 software up-to-date via the free, all-in-one ActiveCaptain app on their compatible smartphone. When upgrading from the GMI 20, users can purchase an adapter plate to easily install the GMI 40 into the existing cutout in the dash.

Upgraded data options

Mariners can purchase the GMI 40 on its own, or as part of an exciting bundle to receive enhanced wind and water information. Bundle options include a gWind wired or wireless transducer, which provides a three-bladed anemometer for more accurate wind speed and a twin-fin design for a more stable True Wind Angle (TWA). Boaters can also opt to receive more detailed data below the surface by including a DST820 thru-hull smart transducer or GDT 43 transducer (depth and temperature) and GST 43 (speed/temperature) transducer with their bundle.

The GMI 40 marine instrument is available now with a suggested retail price of $599.99. The GMI 40 bundles range from $1,099.99 to $1,899.99. To learn more, visit garmin.com/marine.