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Garmin GNX™ 21 Marine Instrument w/Inverted Display - 4"

Out of StockNewSKU: 010-01142-10
$382.49$449.99per unit
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This item is currently out of stock.

Special order from Garmin — Estimated 2–3 weeks.

Quick Specs

Shape: SquareScreen Size: 4"Instrument Function: Multifunction

Description

GNX™ 21 Marine Instrument with Inverted Display - 4"

Marine Instrument with Inverted 4" LCD

  • Large, easy-to-read white or color digits on a black background for high visibility in low-light or darkness; choose from 7 customizable backlight colors
  • Glass-bonded display with anti-glare lens avoids fogging
  • Fully customizable user profiles for sail or power boating to display most important marine and vessel data
  • Low power consumption (25 mA) with 350 mW (no backlight)/400 mW (mid-level backlight)
  • 5 display configurations plus gauge and graph mode to display depth, speed, wind and 50+ marine and boat parameters

The easy-to-read GNX 21 marine instrument has an inverted display with white or color digits on a black background that clearly shows depth, speed, wind and 50-plus marine and boat parameters. Its glass-bonded display with anti-glare lens coating provides excellent daytime and nighttime readability with high-contrast digits scalable up to 36 mm.

The GNX 21 is the first glass-bonded marine instrument with a combination of directly driven LCD segments and a dot-matrix field to display graphical information. Its low power consumption - (25 mA) with 350 mW (no backlight)/400 mW (mid-level backlight) - is perfect for use on sailboats, and provides a valuable instrument for cruising and fishing. Fully customizable user profiles display wind, depth and speed data. Plus, the GNX 21 includes an auto-scroll feature that rotates through data screens for hands-free operation. It can be installed with the included low profile flush mount or an optional flat mount for the ultimate glass helm solution and custom look for your boat.

Easy-To-Read Display

Unique high-contrast hybrid display features large, easy-to-read digits scalable up to 36 mm tall. Offers excellent clarity in direct sunlight, at dusk, or at night. The dot-matrix section can s

Quick Specs

Shape = Square | Screen Size = 4" | Instrument Function = Multifunction

Accessories (20)

Garmin NMEA 2000 Starter Kit

SKU: 010-11442-00

Garmin NMEA 2000 Starter Kit

$101.99

Garmin NMEA 2000 Field Installable Connector, Female

SKU: 010-11095-00

Garmin NMEA 2000 Field Installable Connector, Female

$50.99

Garmin NMEA 2000 Field Installable Connector, Male

SKU: 010-11094-00

Garmin NMEA 2000 Field Installable Connector, Male

$46.74

Garmin NMEA 2000 Backbone Cable (10M)

SKU: 010-11076-02

Garmin NMEA 2000 Backbone Cable (10M)

$38.24

Garmin NMEA 2000 Backbone Cable (6M)

SKU: 010-11076-01

Garmin NMEA 2000 Backbone Cable (6M)

$33.99

Garmin NMEA 2000 Backbone Cable (2M)

SKU: 010-11076-00

Garmin NMEA 2000 Backbone Cable (2M)

$29.74

Garmin 6' NMEA 2000 Cable - Right Angle

SKU: 010-11089-00

Garmin 6' NMEA 2000 Cable - Right Angle

$29.74

Garmin NMEA 2000 Backbone/Drop Cable (1 Ft.)

SKU: 010-11076-03

Garmin NMEA 2000 Backbone/Drop Cable (1 Ft.)

$25.49

Garmin NMEA 2000 T Connector

SKU: 010-11078-00

Garmin NMEA 2000 T Connector

$25.49

Garmin NMEA 2000 Power Cable

SKU: 010-11079-00

Garmin NMEA 2000 Power Cable

$25.49

Garmin NMEA 2000 In-Line Terminator

SKU: 010-11096-00

Garmin NMEA 2000 In-Line Terminator

$21.24

Garmin NMEA 2000 Terminator, Male

SKU: 010-11080-00

Garmin NMEA 2000 Terminator, Male

$16.99

Garmin NMEA 2000 Terminator, Female

SKU: 010-11081-00

Garmin NMEA 2000 Terminator, Female

$16.99

Garmin P79 In-Hull Smart Transducer - NMEA 2000

SKU: 010-11394-00

Garmin P79 In-Hull Smart Transducer - NMEA 2000

$314.49

Specifications

SKU010-01142-10
UPC753759120962
BrandGarmin
CategoryMarine Navigation & Instruments
Country of OriginTAIWAN
Weight2.95
Dimensions10 x 9 x 5
StatusActive
Last Synced8/27/2026, 2:04:51 AM

Compliance & Shipping

WARNINGProp 65 Notice

WarningWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Returnable

Product Literature

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Price$382.49$365.49$441.99$534.65$556.74
BrandGarminRaymarineRaymarineB&GRaymarine
ConditionNewNewNewNewNew
AvailabilityOut of StockIn StockIn StockIn StockIn Stock
Weight2.952.21.021.61.6
Dimensions10 x 9 x 520 x 12 x 49 x 6 x 49 x 6 x 59 x 6 x 3
SKU010-01142-10R28170T060000-13294-001E70327
CountryTAIWANHUNGARYGB1MEXICOHUNGARY
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$382.49