Even in bright sun, it is easy to see the clarity of the GPSMAP 546. These brilliant 5" VGA displays give you a sharp, clear picture, and the fast processor makes for smooth panning and screen redraws as you scroll. Plus, these waterproof units have a high-sensitivity internal GPS receiver, so mariners will alays know their position at sea. They are ready to go with built-in BlueChart g2 marine cartography of the coastal United States - including Alaska, Hawaii, and Explorer Chart data of the Bahamas. Mariners can navigate the waters with ease knowing that these new units include Garmin's proven easy-to-use interface design.

Features and Specifications:

• Bright, crisp 5" diagonal VGA display, 480 x 640 pixels - over 800 nits of brightness
  
• NMEA 2000 certified for seamless integration with the Garmin marine lineup
  
• Preloaded with charts for over 14,000 U.S. lakes and navigable rivers
  
• Compatible with GXM 51 for XM Satellite Radio and XM WX Satellite Weather
  
• Built-in high-sensitivity GPS receiver
  
• 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 an 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
  
• Auto-dimming display
  
• Unit dimensions: 5.9"H x6.4"W x 2.9"D