Garmin Descent Mk3i: The Ultimate Dive Computer for Modern Divers

Garmin Descent Mk3i: The Ultimate Dive Computer for Modern Divers

The Garmin Descent Mk3i represents the pinnacle of dive computer technology, embodying a perfect blend of sophisticated dive functionalities and smartwatch capabilities. This article explores the features of the Mk3i, offering insights for both avid and aspiring divers.

Unveiling the Garmin Descent Mk3i

Dive Computer Features

The Garmin Descent Mk3i stands out with its advanced dive features:

  • Diverse Dive Modes: The Mk3i supports Single-Gas, Multiple-Gas (including nitrox and trimix), Gauge, Apnea, Apnea Hunt, and Closed-Circuit Rebreather modes​​.
  • SubWave™ Sonar Technology: A standout feature, this technology enables diver-to-diver messaging and monitoring of tank pressures and depth for up to eight divers within a 10-meter radius​​​​.
  • DiveView™ Maps: Offering bathymetric depth contours and details of over 4,000 dive sites, these maps enhance dive planning and location orientation​​.
  • Enhanced Display and Durability: The Mk3i boasts a 1.2″ AMOLED display, a scratch-resistant sapphire lens, and a 200-meter dive-rated case​​.

Smartwatch Capabilities

Beyond its dive-focused design, the Mk3i doubles as a full-fledged smartwatch:

  • Health and Fitness Tracking: Features like a wrist-based heart rate monitor, Pulse Oximeter, and sleep monitoring app, provide comprehensive health and fitness insights​​.
  • Multisport GPS Functionality: With preloaded activity profiles for various sports, the Mk3i is ideal for tracking fitness activities on land​​.
  • Connected Features: Users can enjoy Garmin Pay, music storage, and smart notifications when connected to a compatible smartphone​​.

Additional Innovative Features

  • Dive Readiness Tool: This tool assesses sleep, exercise, stress, and jet lag to provide a diver readiness score, aiding in dive planning​​​​.
  • Built-in LED Flashlight: Available in the 51mm version, enhancing visibility in low-light conditions​​.

Pricing and Availability

The Garmin Descent Mk3i dive computer is available in different sizes and colorways, with prices starting at $1,399.99 USD for the 43mm version. The 51mm variant is priced at $1,599 or $1,799, depending on the band choice. Plus there is also an available T2 transceiver which can be added for an extra $500.


The Garmin Descent Mk3i is more than just a dive computer; it’s a comprehensive tool for modern divers. Its innovative features, coupled with smartwatch functionalities, make it a worthy investment for anyone passionate about diving. Whether you’re exploring the depths of the ocean or staying fit on land, the Mk3i is designed to be your reliable companion.

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