specifications

What's in the Box:

• GPSMAP 420s
• Tilt/swivel mount
• Protective front cover
• Power/data cable
• Owner's manual

**Transducer Not Included**

GPSMAP 420

• 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
  
• Two NMEA 0183 I/O ports
  
• CANet™ proprietary bus allows display and control of full feature sounder data on Garmin chartplotters
  
• Unit dimensions: 5.7"W x 5.0"H x 2.7"D

Enable the full functionality of the GPSMAP 420-series with the addition of a BlueChart g2 Vision SD card
BlueChart g2 Vision cards provide:

• High-resolution satellite imagery when overlaid on the chart, will provide the mariner with unparalleled situational awareness
  
• Aerial reference photography provides "real world" photos of ports, harbors, marinas, waterways, navigation landmarks and other points of interest, offering the mariner another powerful tool for navigating unfamiliar waters
  
• Mariners Eye view Provides the mariner with a 3-D perspective of chart information for a quick, reliable and easy position fix.
  
• Fish Eye view 3D perspective below the water line for displaying bottom contours based on bathymetric charting data
  
• Auto guidance technology will search the attributes of all relevant charts to suggest the best course for navigation
  
• Fishing charts, tides, currents, marine services, coastal roads and points of interest detail

Sounder Features:

• Same features as listed above
  
• New sounder design featuring excellent shallow water performance
  
• Power output: 500 watts (RMS) 4000 watts (peak to peak), dual frequency--400 watts (RMS) 3200 watts (peak to peak), dual beam
  
• Depth: 1,500 feet (dual frequency), 900 feet (dual beam)
  
• Choose dual frequency transducer 50kHz (45°), 200kHz (10°) for maximum saltwater performance or dual beam transducer 80kHz
  (45°), 200kHz (14°) for maximum freshwater performance
  
• UltraScroll™ high rep rate sonar provides lightning-fast screen updates
  
• New AutoGain technology enhances target visibility
  
• See-Thru technology: shows weak and strong returns simultaneously
  
• Water temperature log graphically records water temp data
  
• Round flasher display mode (in dual beam mode) and A-scope (in dual frequency mode)
  
• Whiteline
  
• Adjustable depth line helps gauge desired fishing levels and bottom clearance
  
• Split zoom display offers a closer look at fish targets and bottom structure
  
• 2X, 4X and bottomlock zoom
  
• Adjustable keel offset
  
• Alarms for fish size, shallow water, deep water and low battery

Standard Configuration:
GPSMAP 420, built-in receiving antenna, power/data cable, crimp connectors, mounting bracket with tilt/swivel, protective front cover, owner's manual and quick reference guide.