Garmin Descent Mk3i

Garmin Descent Mk3i – Advanced Dive Computer & Smartwatch (51mm & 43mm Options)

The Garmin Descent Mk3i is the ultimate dive computer-meets-smartwatch for active divers who demand performance, durability, and smart features — both underwater and on land. Available in 51mm Carbon DLC Titanium or 43mm Black Titanium, this watch offers pro-grade dive tech in a sleek, rugged design built for all-day wear.

With a bright AMOLED display, sapphire lens, and next-gen features like SubWave™ sonar communication and the Dive Readiness tool, the Mk3i is made for serious diving and serious living.

Choose Your Perfect Fit

• 51mm Carbon DLC Titanium: Bigger display, longer battery life, bold design

• 43mm Black Titanium: Compact, lightweight, equally powerful

Dive Smarter with Cutting-Edge Features

• SubWave™ Sonar Tech: Communicate underwater and monitor air pressure with the optional Garmin Descent T2 transmitter (sold separately, $799). Connect up to 8 tanks within 10m and message divers within 30m.

• Multiple Dive Modes: Supports air, nitrox, trimix, gauge, apnea, apnea hunt, and closed-circuit rebreather (CCR). Fully customizable dive screens for every mode.

• Dive Readiness Tool: Know your physical readiness before diving — based on sleep, stress, recovery, and activity levels.

• DiveView™ Color Maps: Preloaded maps with dive site data and depth contours — straight to your wrist.

• Built-in Dive Flashlight & Lume Mode: Stay visible and informed in low-light conditions.

Navigation You Can Trust

• Multi-band GPS with SATIQ™ tech: Pinpoint-accurate surface navigation

• ABC sensors + underwater compass

• Marks dive entry/exit points, ideal for tracking, training, or outdoor adventures

• Includes TopoActive, SkiView™, and Surfline® maps for land & sea use

‍♂️ Train, Track, and Stay Healthy

• 24/7 wellness tracking: Heart rate, Pulse Ox, sleep, stress, and energy

• VO2 Max, Recovery Time, and Endurance Score to train smarter

• Preloaded sport profiles: running, cycling, skiing, hiking, and more

• Up to 66 hours in dive mode (51mm) or 48 hours (43mm)

• Up to 25 days in smartwatch mode (51mm) or 15 days (43mm)

Smart Features for Life On the Surface

• Smart notifications, music downloads, Garmin Pay™

• Safety alerts with incident detection & live location sharing

• Sync with Garmin Dive™ app, Connect IQ™ store, and more