Garmin GPSMap 421S

GPSMAP 421S, comes with a powerful dual frequency transducer that clearly paints depth contours, fish targets and structure. Features an ultra-bright 4” QVGA display; built-in, satellite-enhanced worldwide basemap and simplified user operation. The 421 also has an SD card slot so you can add additional features with the optional BlueChart® g2 Vision card. The 421’s basemap contains worldwide satellite images in place of more traditional maps, and its SD card slot makes it easy to add additional maps without connecting to a computer. With fewer keys and a simple, intuitive interface, the 421 makes navigating your way through the water easy.
With the optional BlueChart g2 Vision SD card, you can add a whole new dimension of exceptional features to your chartplotter.

• 3D mariner’s eye view or fish eye view provides you with a 3-dimensional perspective of map information, both above the waterline and below it.
• High-resolution satellite images and aerial photographs help you orient yourself in unfamiliar areas.
• Auto Guidance technology searches through all relevant charts to create a route you can actually follow - one that avoids obstacles, shallow water, buoys and other obstructions.

Sounder power output 500 watt RMS, 4000 watts peak. Supplied with internal GPS antenna. External GPS antenna available as an option.