The Garmin echoMAP 50dv has a 5-inch display, which provides VGA-quality imaging. Built into the echoMAP 50dv is Garmin’s trademarked High-Definition Identification target tracking technology. Better known as HD-ID, it provides a super clear image of the area under the boat. Garmin echoMap 50dv combines HD-ID with the DownVü scanning sonar, which provides a virtually photographic view of structure in the water.
The built-in GPS receiver on the Garmin echoMAP 50dv has a speed of 10 Hz which allows it to update position 10 times a second. The higher update frequency results in more fluid boat movement display. Also included is sonar-recording capability for coordinating the timing of the sonar return with your boat’s position. You can playback your sonar recording on a PC with HomePort software or send it wirelessly to an Apple device equipped with BlueChart Mobile software.
The Garmin echoMAP 50dv comes pre-loaded LakeVu HD map package, which provides details of 17,000-plus US lakes; or the BlueChart g2 coastal map package. The 50dv is capable of storing up to 5,000 waypoints and 100 routes. It also has a track log capacity of 50,000 points, with 50 saved tracks. The unit is equipped with two microSD cards for expanding the built-in flash memory and additional cartography. Garmin echoMAP 50dv comes with the transducer, power and data cable, tilt and swivel mount, flush mount, protective cover, and a user manual. You can get a great deal on Garmin echoMap 50dv here.
| Lowrance Elite-7 HDI | Garmin echoMap 50dv | Raymarine Dragonfly | |
|---|---|---|---|
 | |  | |
| Screen Size | 7 in | 5 in | 5.7 in |
| Screen Resolution | 480 x 800 pixels | 640 x 480 pixels | 640 x 480 pixels |
| Display Type | 16-bit color, Full VGA SolarMax PlusTFT | VGA display | Color VGA |
| Imaging | 2D, Down Imaging, Downscan Overlay | 2D and Down Imaging | 2D and Down Imaging |
| Transducer Type | Transom Mount/Trolling Motor | Transom Mount/Trolling Motor | Transom Mount/Trolling Motor |
| Transmit Power | Max 250W RMS 30,000W Peak to Peak analog equivalent | 500 W (RMS) 4,000 W (peak to peak) | 500W RMS 4000W Peak-To-Peak |
| Sonar Frequency | 50/200 or 83/200 kHz 2D 455/800 kHz Down Imaging | 77/200 kHz 50/200 kHz with an optional dual frequency tranducer | 200 kHz Sonar/350 kHz Down Vision |
| Maximum Depth | 1000 or 2500 ft 2D 300 ft Down Imaging | 2,300 ft at 77 kHz freshwater 1,100 ft at 77 kHz, saltwater | 600 ft in both DownVision and Sonar modes |
| GPS Antenna Type | Internal, high-sensitivity GPS+WAAS | Internal | Internal |
| Waypoint Storage | 3000 | 5000 | 3000 |
| Routes | 100 | 100 | 150 |
| Preloaded Maps | Expanded U.S. BaseMap or Insight USA | LakeVu HD or BlueChart g2 Vision coastal maps | Navionics US Coastal and Inland Silver or Gold |
| MSRP | $699 | $649 | $699 |
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