The Garmin GPSMAP 421s is a high quality GPS combo chartplotter and fishfinder which includes a Dual Frequency transducer. It’s clear, sun readable 4" (10.16 cm) screen provides excellent rendered maps that can be loaded by means of a SD card slot. Garmin GPSMAP 421s includes a worldwide basemap enhanced with satellite images. More detailed maps can be loaded with the Blue Chart g2 vision cards. These cards permit users of the GPSMAP 421s to view extra high resolution satellite images, 3D charts and photos of bays, harbors, waterways, ports and other points of interest.

Garmin GPSMAP® 421s Chartplotter - Description

GPSMAP 421s Chartplotter is also a rugged Fishfinder equipped with an internal antenna. Menus and functions are logical and easy to use. Scrolling is seamless, efficient and fast reacting. Garmin GPMSMAP 421s Fishfinder is very simple to install and can easily be removed at the end of your journey.

Sonar
The GPSMAP 421s, includes a powerful dual-frequency transducer that clearly indicates depth contours, structures and fish targets whether you’re fishing in freshwater or off the coast. The Garmin GPSMAP 421s is NMEA 2000-certified for easy connectivity with sensors, instruments and other marine instruments.

Basemap
Garmin GPSMAP 421s is supplied with a high-sensitivity GPS receiver with satellite tracking and very fast acquisition times. Instead of traditional maps the GPSMAP 421s basemap is enhanced with satellite images.

Extras
If equipped with the GXM™ 51 satellite receiver/antenna, the GPSMAP 421s Chartplotter can receive U.S. graphical weather data. If BlueChart g2 Vision cards are purchased, many exceptional features and be added such as 3D maps, High-Res satellite images and Auto-guidance searches.

Garmin GPSMAP® 421s Chartplotter - Main Features

• High-sensitivity GPS receiver
• High-speed processor
• Simple user interface
• Backlit keypad
• Power output: 500 watts (RMS) 4000 watts (peak to peak), dual frequency
• Operational Depth: 1,500 feet / 500 meters
• Transom or trolling mount transducer
• UltraScroll® sonar provides fast screen updates
• AutoGain technology facilitates target visibility
• Water temp log records temperature
• Adjustable depth line permits setting of fishing levels and bottom clearance
• Split zoom display of fish targets and bottom surface
• Adjustable setting of keel offset
• Alarms for shallow water, deep water, fish size, and low battery

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 Garmin GPSMAP® 421s Chartplotter - What's Included in the Box (010-00764-01)

• GPSMAP 421s Chartplotter Fishfinder
• Dual Frequency Transducer
• Tilt/swivel mount
• Protective front cover
• Power/data cable
• Owner's manual

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Garmin GPSMAP® 421s Chartplotter Specifications (010-00764-01):