GPSMAP 431 Chartplotter
Features an ultra-bright 4" QVGA display along with an improved high-speed digital design for faster map drawing and panning speeds. Plus, these waterproof units have a high-sensitivity internal GPS receiver, so mariners will always know their position on the water. They are ready to go with built-in cartography for inland U.S. waters (over 14,000 lakes) and Garmin's proven easy-to-use interface designed to help you navigate the waters with ease. Features and Specifications:
- Ultra-bright 4" diagonal QVGA display, 240 x 320 pixels - over 800 nits of brightness
- Preloaded with charts for over 14,000 U.S. lakes and navigable rivers
- 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
- Unit dimensions: 5.0"H x 5.7"W x 2.7"D
- Power output: 400 watts (RMS) 3200 watts (peak to peak), dual beam
- Depth: 900 feet/300 meters (dual beam)
- Use a dual frequency transducer 80 kHz (45 degrees), 200kHz (14 degrees) for maximum saltwater performance
- 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
- Round flasher display mode
- 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
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