This sleek chartplotter offers big capability in a small package. The Garmin GPSMAP 420 features an ultra-bright 4” QVGA display and a built-in, satellite-enhanced worldwide basemap. Add even more mapping capabilities with the optional Garmin BlueChart® g2 Vision card.

See detail-rich imagery like never before
The worldwide basemap on the Garmin GPSMAP 420 can be enhanced with the optional Garmin BlueChart® g2 Vision card, which provides high-resolution aerial reference photos for help navigating tricky harbors and channels — or locating spots like area marinas, fuel stops or restaurants. The Garmin g2 Vision plug-in data card also allows the Garmin GPSMAP 420 to graphically depict a true 3D “mariner’s eye” topside view or “fish eye” underwater navigation perspective.

Experience super simple user interface for easy operation With fewer buttons to push and fewer operational steps to navigate, the simplified menu format on the Garmin GPSMAP 420 makes it easy for you to see and select the data you want to access on-screen.

Simplify navigation with Auto Guidance
Optional Garmin g2 Vision auto guidance technology will help simplify your navigation. It’s like having a knowledgeable guide to local hazards and waterways always on deck. Auto Guidance searches all the chart features to suggest the best known charted route for navigation.

Garmin GPSMAP 420 Specifications:

Ultra-bright 4" diagonal QVGA display, 320 x 240 pixels - over 800 nits of brightness

New streamlined user interface offers easy selection of functions and features

Preloaded worldwide satellite imagery

Single SD memory card slot for BlueChart g2 Vision cards, as well as saving waypoints, routes and tracks to a SD card which can be shared with others

Built-in GPS antenna

BNC connector for optional GA29 remote GPS antenna

Backlit keypad for easier operation at night

CANet proprietary bus allows display and control of full feature sounder data on Garmin chartplotters

Two NMEA 0183 I/O ports

Unit dimensions: 5.7"W x 5.0"H x 2.7"D


Ships With The Following Items:

Garmin GPSMAP 420

Built-in GPS Receiving Antenna

Power/Data cable

Mounting bracket with tilt/swivel

Protective front cover

Owner's manual and Quick Reference Guide