Garmin GPSMAP 421S GPS Dual Frequency Combo

Retail Price - $499.99

GPSMAP 421S Chartplotter Combo - Includes Dual Frequency Transducer
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 at sea. They are ready to go with a built-in, satellite-enhanced worldwide basemap and Garmin's proven easy-to-use interface designed to help you navigate the open waters with ease. This model is compatible with various NMEA 2000 components, inculuding Garmin's full lineup of NMEA 2000 marine sensors and autopilots.
Features and Specifications:

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
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.

Options & Accessories
28685 Garmin 10' Transducer Extension Cable
26206 Garmin 20' Extension Cable f/Transducer w/ID
14924 Garmin 200 kHz Plastic In-Hull Transducer - Depth Only
13154 Garmin 200 kHz Transom Mount Transducer - Depth/Speed/Temp
14860 Garmin 200/50kHz, 12/45Deg, Plastic, Adj. In-Hull Mount Transducer
33202 Garmin 200/50kHz 12/45 Degree Thru-Hull Nylon Temp & Depth 8 Degree Tilt
14923 Garmin 200kHz 12 Deg. Plastic Thru-Hull Mount Transducer
30665 Garmin 2nd Station Mounting Kit f/GPSMAP 500 Series
31066 Garmin 200/50KHz, 6/19deg, 1KW, Bronze Thru-Hull Transducer w/Depth, Temp, & Fairing Block
33370 Garmin Airmar B117 200/50kHz Bronze Thru-Hull Transducer
30428 Garmin Flush Mount Kit f/GPSMAP 4XX Series
31902 Garmin GFS™ 10 Fuel Sensor for Gas Engines Only
31885 Garmin GPS 17x NMEA 2000 High Sensitivity Receiver
35085 Garmin GXM 51 Weather & Audio XM Satellite Receiver
31890 Garmin NMEA 2000 Backbone/Drop Cable (1 Ft.)
31891 Garmin NMEA 2000 Backbone Cable (2M)
31893 Garmin NMEA 2000 Backbone Cable (10M)
31892 Garmin NMEA 2000 Backbone Cable (6M)
31898 Garmin NMEA 2000 Field Installable Connector, Female
31897 Garmin NMEA 2000 Field Installable Connector, Male
31899 Garmin NMEA 2000 In-Line Terminator
32644 Garmin NMEA 2000 Power Cable
31894 Garmin NMEA 2000 T Connector
31896 Garmin NMEA 2000 Terminator, Female
31895 Garmin NMEA 2000 Terminator, Male
30843 Garmin Power & Data Cable f/400 & 500 Series
30668 Garmin Power/Data Cable for 400C & GPSMAP 400 & 500 Series
31059 Garmin Replacement Swivel Mount f/GPSMAP 500 Series
14935 Garmin Speed Sensor
15338 Garmin Thru Hull Mount, Plastic, Temp & Speed Only
14926 Garmin Temperature Probe
13593 Garmin 200/50kHz, 10/40 Deg, Plastic TM, Depth & Temp
13474 Garmin 200/50kHz, 12/45Deg, Plastic Transom Mount w/ Depth, Temp, and Speed
13894 Garmin 200kHz, 14 Deg, Plastic Trolling Motor Transducer
36571 RAM Mount Double Socket Arm f/Garmin Marine Fixed Mount GPS 1"
41984 RAM Mount Double Socket Arm f/Garmin Fixed Mount GPS - 1.5"