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Garmin GPSMAP 421s Sounder with Dual Frequency Transducer Specifications |
Please find below additional technical documentation and/or specifications for this item. This documentation may take the form of mechanical drawings, installation manuals, instruction manuals, and a table of specifications. |
| Disclaimer: Specifications shown are subject to change by the manufacturer without notice. Information provided is believed correct and true to the best of our ability, however, GPS City is not responsible
for typographical errors or incorrect data. To report any errors, please use the feedback form. |
| General |
| 1 |
Unit dimensions, WxHxD: |
5.7in x 5.0in x 2.7in (14.5 x 12.7 x 6.9 cm) |
| 2 |
Display size, WxH: |
2.4in x 3.2in, 4.0in diagonal (6.1 x 8.1 cm, 10.2 cm diagonal) |
| 3 |
Display resolution, WxH: |
240 x 320 pixels |
| 4 |
Display type: |
QVGA display |
| 5 |
Weight: |
1.3 lb (590 g) |
| 6 |
Battery: |
none |
| 7 |
Battery life: |
none |
| 8 |
Waterproof: |
Yes (IPX7) |
| 9 |
GPS-enabled: |
Yes |
| 10 |
Floats: |
No |
| 11 |
High-sensitivity receiver: |
Yes |
| 12 |
PC interface: |
None |
| 13 |
RoHS version available: |
No |
| 14 |
Preloaded maps: |
No |
| 15 |
Ability to add maps: |
Yes |
| 16 |
Street Map Compatible: |
No |
| 17 |
Topographic Map Compatible: |
No |
| 18 |
Marine Software Compatible: |
No |
| 19 |
Bluechart g2 Map Compatible: |
Yes |
| 20 |
Bluechart g2 Vision Map Compatible: |
Yes |
| 21 |
Accepts data cards: |
SD data card |
| 22 |
Waypoints/favorites/locations: |
3000 |
| 23 |
Additional: |
N/A |
| 24 |
Garmin Connect™ compatible (online community where you analyze, categorize and share data): |
No |
| 25 |
Widescreen |
No |
| Automotive |
| 26 |
Routes: |
100 |
| 27 |
Basemap: |
Yes |
| 28 |
Voice prompts (e.g. "Turn right in 500 ft."): |
No |
| 29 |
Speaks street names (e.g. "Turn right ON ELM STREET in 500 ft.") : |
No |
| 30 |
Automatic routing (turn by turn routing on roads): |
No |
| 31 |
Qwerty or ABC keyboard (choose keyboard layout): |
No |
| 32 |
Antenna Type: |
Internal |
| 33 |
External Antenna Jack: |
BNC |
| 34 |
Remote control: |
No |
| 35 |
FM transmitter: |
No |
| 36 |
Headphone jack/audio line-out: |
No |
| 37 |
Audio/video input/output: |
No |
| 38 |
Dead reckoning: |
No |
| 39 |
Garmin Lock™ (anti-theft feature): |
No |
| 40 |
Automotive-friendly: |
No |
| 41 |
Motorcycle-friendly: |
No |
| Outdoor |
| 42 |
Track log: |
10,000 points; 50 saved tracks |
| 43 |
Hunt/fish calendar: |
No |
| 44 |
Sun and moon information: |
No |
| 45 |
Tide tables: |
Yes |
| Marine |
| 46 |
Portable |
No |
| 47 |
Marine Auto Guidance |
Yes |
| 48 |
Radar compatible |
No |
| 49 |
Sonar compatible |
Yes |
| 50 |
CANet® compatible |
No |
| 51 |
Marine Network™ compatible |
No |
| 52 |
Supports AIS (tracks target ships' position) |
Yes |
| 53 |
Supports DSC (displays position data from DSC capable VHF radio) |
Yes |
| 54 |
Audible alarms |
Yes |
| 55 |
XM WX Weather & Radio for U.S. compatible |
Yes |
| 56 |
NMEA input/output |
Yes (NMEA 2000/0183) |
| 57 |
Dual-beam sonar capable |
Yes |
| 58 |
Dual-frequency sonar capable |
Yes |
010-00764-01 |
The Garmin GPSMAP 421 is a compact chartplotter that features an ultra-bright 4” QVGA color display along with an improved high-speed digital design for increased map drawing and panning speeds. It’s ready to go with a built-in, satellite-enhanced worldwide basemap and an easy-to-use interface designed to help you navigate the open waters with ease. The Garmin GPSMAP 421 also accepts BlueChart® g2 Vision cards for added features and functionality such as high-resolution satellite imagery, 3D views and Auto Guidance technology.
View Satellite-enhanced Worldwide Basemap
The Garmin GPSMAP 421 basemap contains worldwide satellite images in place of traditional maps. The Garmin GPSMAP 421 also comes standard with a high-sensitivity GPS receiver for superior satellite tracking and quicker acquisition times. In addition, the Garmin GPSMAP 421 can receive U.S. graphical weather data via optional GXM 51 satellite receiver/antenna. And with an SD card slot, it’s easy to add additional maps without connecting to a computer.
Add Sonar
Where applicable, the sounder version, the Garmin GPSMAP 421s comes with a powerful dual-frequency transducer that clearly illustrates depth contours, fish targets and structures whether you’re fishing in freshwater or off the coast. The Garmin GPSMAP 421 and Garmin GPSMAP 421s are also NMEA 2000-certified for easy connectivity with sensors, instruments and future marine offerings.
Add Extras with BlueChart g2 Vision
With the optional BlueChart g2 Vision SD card, you can add a whole new dimension of exceptional features to your chartplotter.
- 3D Mariner’s and Fish Eye view provides you with a 3-dimensional perspective of map information, both above and below the waterline
- High-resolution satellite images and aerial photographs help you orient yourself in unfamiliar areas
- Auto Guidance technology searches through all relevant charts to create a route you can actually follow — one that avoids obstacles, shallow water, buoys and other obstructions
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