Garmin Descent Mk3i 51mm Titanium Dive Watch

Built for demanding dives and ambitious adventures, the Garmin Descent Mk3i 51mm brings advanced dive-computer technology together with the everyday versatility of a premium multisport smartwatch.

This Carbon Grey DLC Titanium edition combines a durable titanium construction with a sapphire lens and bright 1.4-inch AMOLED display, creating a refined watch designed to handle challenging conditions above and below the surface.

Designed for Serious Diving

The Descent Mk3i supports a comprehensive selection of dive modes for recreational, technical and freediving use. Clear, customisable data screens put essential information within easy reach, while Big Numbers Mode provides a simplified view when maximum readability matters.

Supported dive activities include single-gas and multi-gas diving, Nitrox, Trimix, closed-circuit rebreather, gauge, apnea and apnea hunt modes.

With a 200-metre dive rating, leakproof inductive buttons and a rugged construction, the Mk3i is purpose-built for regular underwater use.

Stay Connected Below the Surface

Compatible with Garmin's SubWave™ sonar networking technology, the Mk3i introduces an additional level of awareness for group diving.

When used with compatible Descent T2 transceivers, divers can exchange preset messages and view selected information from other connected divers, including tank pressure and depth data.

It is a valuable addition for dive teams who want greater situational awareness without compromising the streamlined experience of a wrist-mounted computer.

Navigation from Dive Site to Summit

The Mk3i is equally capable once you're back on land.

Multi-band GNSS positioning, surface GPS, ABC sensors and advanced mapping tools provide reliable navigation for diving trips, hiking, running and other outdoor activities.

Preloaded DiveView™ maps provide bathymetric depth contours and information for thousands of dive locations, while TopoActive mapping extends navigation capabilities to adventures on land.

Bright AMOLED Display & Sapphire Lens

A vivid 1.4-inch AMOLED display delivers excellent clarity for maps, dive information, training metrics and everyday smartwatch functions.

The sapphire crystal lens provides additional resistance to scratches, while the 51mm case offers a substantial display without sacrificing the rugged character expected from a professional dive computer.

An integrated LED flashlight adds practical illumination with adjustable brightness and strobe options, useful around dive equipment, on trails and in low-light environments.

Made for More Than Diving

The Descent Mk3i transitions seamlessly from dive computer to multisport training watch.

Dedicated activity profiles cover running, cycling, swimming, hiking, strength training, rowing, skiing, surfing, golf and numerous other activities.

Advanced performance tools provide useful insight into training, endurance and recovery, making the watch suitable for athletes who need one device across several disciplines.

Health & Recovery Insights

Continuous health and wellness monitoring helps provide a broader picture of your daily condition.

Depending on the feature and activity, the Mk3i can track wrist-based heart rate, Pulse Ox, sleep, stress, recovery time, VO2 max and additional performance metrics.

Garmin's Dive Readiness feature also considers relevant wellness and activity information to provide additional insight before a planned dive.

Battery Built for Longer Adventures

Long battery performance means less time thinking about charging and more time exploring.

Smartwatch mode: up to 25 days
Dive mode: up to 66 hours

Actual battery performance can vary depending on enabled features and usage.

Everyday Smartwatch Convenience

Away from training and diving, the Mk3i provides the functionality expected from a high-end Garmin smartwatch.

Receive compatible smartphone notifications, listen to downloaded music, make supported contactless payments with Garmin Pay™, download additional apps and watch faces through Connect IQ™, and review activities through Garmin's connected apps.

Product Highlights

Case Size: 51mm
Display: 1.4-inch AMOLED
Lens: Sapphire crystal
Case / Bezel Finish: Carbon Grey DLC Titanium
Band: DLC Titanium
Dive Rating: 200 metres
Dive Modes: Recreational, technical and freediving modes
Air Integration: Compatible with supported Descent transceivers
Navigation: Multi-band GNSS, GPS, compass and mapping
Maps: DiveView™ and TopoActive mapping support
Flashlight: Integrated multi-intensity LED
Health Monitoring: Heart rate, Pulse Ox, sleep and wellness metrics
Sports: Extensive indoor and outdoor activity profiles
Smart Features: Notifications, music, Garmin Pay™ and Connect IQ™
Battery: Up to 25 days in smartwatch mode / up to 66 hours in dive mode

A Dive Computer You Can Wear Every Day

The Garmin Descent Mk3i 51mm Carbon Grey DLC Titanium is designed for people who don't want to choose between a dedicated dive computer, an outdoor GPS watch and a premium everyday smartwatch.

From technical dives and overseas expeditions to training sessions and everyday wear, it provides one sophisticated platform built to accompany you across all of them.