SubWave Sonar
Diver-to-diver messaging and tank-pressure monitoring through the water — air integration via the Descent T2 transceiver keeps your whole group connected at depth.



Discover a deeper connection. Featuring SubWave sonar-based communication and diver monitoring, this advanced, air-integrated dive computer and smartwatch pairs a bright AMOLED touchscreen with a 200-meter dive-rated build and DiveView color maps — plus multisport training and smart features for your active life out of the water.
Diver-to-diver messaging and tank-pressure monitoring through the water — air integration via the Descent T2 transceiver keeps your whole group connected at depth.
200-meter dive rating with leakproof metal buttons, sapphire lens and a 3-axis dive compass — hardware engineered for serious diving.
Single and multi-gas dives (nitrox and trimix), CCR, gauge, apnea and more — with a dive planner for NDL and multi-gas deco planning.
Built-in DiveView color maps show depth contours and dive sites, and your entry and exit points are saved automatically.
Up to 30 hours of battery life in dive mode — up to 15 hours with air integration — and up to 10 days as a smartwatch.
Out of the water it is a full multisport smartwatch: music storage, built-in maps, training readiness and Garmin Pay.
Garmin · Descent Mk3i 43mm · Dive Deeper
Pairs well with
In stock! Ships within 1-2 business days.
90-day risk-free trial
2-Year Warranty
Complimentary shipping & returns

Garmin Descent Mk3i 43mm Dive Computer - International Warranty
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