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The Verdict

The Garmin ECHOMAP Ultra 2 166sv delivers flagship-level fishfinding capabilities in a massive format. The 16-inch Full HD in-plane switching display is the absolute standout, providing the real estate needed to run mapping, LiveScope, and traditional sonar simultaneously without feeling cramped. Users consistently praise the wireless networking features, which eliminate the headache of running extra cables to share sonar and waypoints with other ECHOMAP units on deck. Combined with multi-band GPS for pinpoint accuracy near docks and steep banks, it is a powerhouse for serious offshore and inland anglers.

However, the massive footprint comes with practical trade-offs. Unlike the 10-inch and 12-inch models, the 166sv lacks a quick-release cradle, relying instead on a traditional gimbal bracket—making removal at the end of the day more cumbersome. The display also utilizes a polycarbonate matte screen rather than premium glass; while excellent for glare reduction, it lacks the high-gloss aesthetic you might expect at this tier. Finally, the true cost of ownership is high, as it requires an additional investment in transducers and black boxes to unlock the famous LiveScope capabilities.

Despite the heavy initial investment and the lack of a quick-release mount, the ECHOMAP Ultra 2 166sv is an undeniable buy for dedicated tournament anglers and large-boat owners. If your priority is maximizing screen real estate for LiveScope and you need a high-resolution, glare-resistant display to dissect targets in direct sunlight, the sheer utility and raw performance of this chartplotter effortlessly justify the premium price.

Compare with similar products

PriceRank
PriceRank
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PriceRank
PriceRank
——
Rating
Colorwithout transducerwithout transducerGT56UHD-TM transducerGT56UHD-TM transducer———
Included MapsNorth AmericaWorldwide BasemapWorldwide BasemapNorth AmericaNorth AmericaNorth AmericaNorth America
ConnectivityWi-Fi——Wi-Fi, NMEA 2000, NMEA 0183Wi-Fi——
TransducerNo TransducerNo TransducerTransducer IncludedTransducer IncludedNo TransducerNo TransducerNo Transducer
BrandGarminGarminGarminGarminGarminGarminGarmin
Control TypeTouchscreenTouchscreenTouchscreenTouchscreenTouchscreenTouchscreenTouchscreen
Sonar TechnologyLive SonarLive SonarLive SonarLive SonarLive SonarLive SonarLive Sonar
FeaturesTrolling Motor Control————Trolling Motor ControlTrolling Motor Control

About this product

  • 16” touchscreen with keyed assist and full HD in-plane switching display offers built-in tools to help you find and catch fish
  • Preloaded Garmin Navionics+ mapping offers integrated coastal and inland lake coverage plus Auto Guidance+ technology (for planning purposes only; does not replace safe navigation operations); add premium Garmin Navionics Vision+ mapping for high-resolution relief shading and more
  • Vivid scanning sonar color palettes make it easy to distinguish targets and structure
  • Built-in support for the full line of live sonar products, including the LiveScope System plus Garmin CHIRP traditional sonar and UHD ClearVü and SideVü scanning sonars (sold separately)
  • Both wired and/or wireless networking allows for easy sharing of sonar, waypoints and routes with another ECHOMAP Ultra 2 or ECHOMAP UHD2 chartplotter on board (optional LiveScope sonar cannot be shared wirelessly)

Specifications

Brand
Garmin
Model
010-03386-00
Brand
Garmin
Screen Size
16 Inch
Control
Touchscreen
Sonar
Live Sonar
Maps
North America
Transducer
No Transducer
Connectivity
Wi-Fi
Features
Trolling Motor Control
Width
10.5 inches
Height
13.8 inches
Depth
3.14 inches
Weight
9.5 Pounds
Colour
without transducer
Warranty
2 Year Limited Warranty
Released
2025-07-08T00:00:01Z
Part number
010-03386-00
Manufacturer
Garmin
GTIN
00753759353353