Garmin GNX 21 Marine Instrument

The easy-to-read GNX 21 marine instrument has an inverted display with white or colour digits on a black background that clearly shows depth speed wind and 50-plus marine and boat parameters. Its glass-bonded display with anti-glare lens coating provides excellent daytime and night-time readability with high-contrast digits scalable up to 36 mm.

The GNX 21 is the first glass-bonded marine instrument with a combination of directly driven LCD segments and a dot-matrix field to display graphical information. Its low power consumption — (25 mA) with 350 mW (no backlight)/400 mW (mid-level backlight) — is perfect for use on sailboats and provides a valuable instrument for cruising and fishing. Fully customisable user profiles display wind depth and speed data. Plus the GNX 21 includes an auto-scroll feature that rotates through data screens for hands-free operation. It can be installed with the included low profile flush mount or an optional flat mount for the ultimate glass helm solution and custom look for your boat.

In The Box

GNX 21 Trim piece snap cover Protective cover Flush mount gasket and hardware NMEA 2000® power cable NMEA 2000 drop cable NMEA 2000 T-connectors and terminators Installation instructions Documentation.

Why Buy From Us?

We have sold thousands of Garmin Marine Products so far and have a track record of happy customers. Here are some of the reasons people choose us:

• We have detailed product knowledge and we use many of these products ourselves in our hobby so we understand the benefits these bring and also the challenges you may face fitting them on your boat so we can help find the best option for you.
• If you have any questions on this product, what else you might need with it or just want to make sure it is the best product for you, our experts are always happy to help.
• Exceptional customer service is our top priority, reflected in our 5-star reviews.
• If for whatever reason you have a problem, our strong after sales service will make sure you are looked after and we will drive through any warranty cases as quickly as possible for you.

Join our happy customer base and reach out to our experts for guidance on finding the perfect product for you. 

Here is what one of our customers has said, if you want to check out some more of our 5-star reviews you can see them here.