The Garmin GMI 20 is a high-quality marine instrument display that provides sailors with essential data such as wind speed, depth, and boat speed. It features a bright, easy-to-read 4-inch color display that can be customized to show the information that is most important to the user. The GMI 20 is designed to withstand the harsh marine environment and is compatible with a range of Garmin sensors and transducers. Our website offers a range of screen protectors for the GMI 20 to help keep the display safe from scratches, smudges, and other damage that can occur during use.