Innovative control unit Large 4" anti-reflective color screen Readable from a distance and from a viewing angle of 170 degrees Backlighting with red/black or green/black color schemes Low-profile flush-mount or flush-mount option Featuring an "easy to use" interface and a large, bright 4" color display, the GHC 20 is easy from a distance and from any angle. This new control unit features the best possible night visibility, with as many as three different color combinations (full color, red/black, green/black) and is perfectly visible in sunlight thanks to the high contrast of its state-of-the-art LCD. The GHC 20 control unit is compatible with any autopilot Garmin and can be interfaced with the innovative quatix™, the only watch designed for boating that allows you to steer your boat from your wrist. The GHC 20 is connected via NMEA2000 to the rest of the instrumentation for total sharing of navigation data with the rest of the instrumentation. Inside the GHC 20 package are two faceplates: "black" for installations with Glass Helm chartplotters and "silver" for installations with Legacy chartplotters.