Garmin GPSMAP 421s Compact Color GPS/Sonar Combo with Saltwater Transducer

• Ultra-bright 4" diagonal QVGA display, 240 x 320 pixels - over 800 nits of brightness
  
• NMEA 2000 certified for seamless integration with the Garmin marine lineup
  
• Preloaded worldwide marine basemap
  
• Compatible with GXM 51 for XM Satellite Radio and XM WX Satellite Weather
  
• High-speed processor for fast screen redraws and smooth panning
  
• Streamlined user interface makes it simple to select modes and features
  
• Single SD memory card slot for BlueChart g2 Vision cards, as well as saving waypoints, routes and tracks to a SD card
  
• Optional BlueChart g2 Vision cards provide marine chart detail and enhanced navigation features like Auto Guidance, satellite imagery, 3-D Mariner's Eye View and 3-D Fish Eye View
  
• Backlit keypad for easy operation in low light conditions
  
• Unit dimensions: 5.0"H x 5.7"W x 2.7"D (12.7cm H x 14.5cm W x 6.9cm D)
  
• Power output: 500 watts (RMS) 4000 watts (peak to peak), dual frequency
  
• Depth: 1500 feet/500 meters (dual frequency)
  
• Use a dual frequency transducer 50 kHz (45 degrees), 200 kHz (10 degrees) for maximum saltwater performance
  
• Patented transom/trolling mount transducer
  
• UltraScroll high rep rate sonar provides lightning-fast screen updates
  
• AutoGain technology enhances target visibility
  
• See-Thru technology: shows weak and strong returns simultaneously
  
• Water temperature log graphically records water temp data
  
• A-scope
  
• 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.

  What's in the Box:

  • GPSMAP 421s
  • Transom Mount Transducer
  • Tilt/swivel mount
  • Protective front cover
  • Power/data cable
  • Documentation