Garmin GPSmap 420s Chartplotter with Dual Frequency Transducer

Garmin GPSmap 420s Chartplotter with Dual Frequency Transducer

  • Ultra-bright, 4-inch, full-color QVGA display with 320 x 240 pixels of resolution and over 800 nits of brightness
  • Built-in, satellite-enhanced worldwide basemap
  • Compatible with optional BlueChart g2 Vision card for enhanced mapping capability and auto guidance
  • Weighs 1.5 pounds and measures 5.7 x 5 x 2.7 inches (W x H x D)
Editorial Review
The Garmin GPSMAP 420s Chartplotter with Dual Frequency Transducer provides big capability in a small, sleek package. With plenty of built-in functionality and compatibility for upgrades or expansions, the 420s is the perfect companion for any boater looking to get out on the water and start exploring, or to simply plot a safe course from point A to point B.

The Garmin 420s chartplotter uses a crisp, ultra-bright, full-color 4-inch QVGA display with 320 x 240 pixels of resolution and over 800 nits of brightness that lets you easily distinguish bottom detail and fish from background structure. The 420s lets you view your position with pinpoint accuracy to within less than three meters via its powerful, WAAS-enabled GPS antenna, and comes with a built-in, satellite-enhanced worldwide basemap. What's more, compatibility with the optional BlueChart g2 Vision card allows you to further enhance this unit's mapping capabilities with features such as high-resolution aerial reference photos for help navigating tricky harbors and channels, or locating spots like area marinas or fuel stops. The g2 Vision card also lets the 420s provide graphical depictions in a true 3D mariner's-eye topside view, or fish-eye underwater perspective.

The Garmin 420s features intuitive navigation with fewer buttons to push and operational steps to traverse, and a simplified menu format that makes it easier for you to see and select the data you want to access on-screen, as well as a tilt and swivel mount bracket that lets you set it for optimum positioning. The 420s also features a backlit keypad for easier operation at night, and a new night mode function that provides optimum readability in low-light conditions. The 420s can also provide auto guidance via the optional g2 Vision card, which searches all your chart features in order to suggest the best known charted route for navigation, so you always have a knowledgeable guide to local hazards and waterways on deck with you.

The 420s is designed to be easily adaptable to various conditions with a choice of dual-beam or dual-frequency sonar to clearly portray depth contours, fish targets,...

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Last updated: November 21, 2019 at 03:07 EST. Pricing information is provided by the listed merchants. is not responsible for the accuracy of pricing information, product information or the images provided. Product prices and availability is subject to change. Any price and availability information displayed on or other merchants at the time of purchase will apply to the purchase of the product. As always, be sure to visit the merchant's site to review and verify product information, price, and shipping costs. is not responsible for the content and opinions contained in customer submitted reviews.


Garmin GPSmap 420s Chartplotter with Dual Frequency Transducer
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