Garmin Descent™ Mk3i – 51 mm
The Garmin Descent™ Mk3i – 51 mm dive watch is a top-tier dive computer and multisport smartwatch in one, designed for demanding divers and active lifestyle enthusiasts. This model stands out with cutting-edge diving technology, exceptional precision, and smart features that are useful both underwater and in everyday life.
The watch features a large, bright AMOLED display that ensures excellent visibility even in challenging conditions – both in bright sunlight and deep water. The Descent™ Mk3i supports various dive modes, including technical (multi-gas), recreational, freediving, and CCR (closed-circuit rebreather) diving, making it suitable for both beginners and professionals.
One of the standout features of this model is air integration capability and compatibility with transmitters, allowing you to monitor tank pressure and other divers' data in real time. The integrated SubWave™ sonar technology also enables communication with other divers underwater and sharing important information.
Beyond diving features, the Descent™ Mk3i offers a full suite of sports and health tracking: advanced wrist-based heart rate monitoring, Pulse Ox, sleep analysis, training status assessment, and numerous sports modes. Integrated multi-band GPS navigation allows you to accurately track routes on land and water.
High-quality materials such as titanium and sapphire crystal ensure exceptional durability even in extreme conditions. Intuitive controls and an enhanced user interface make it easy to use all features.
Key advantages
- Large and bright AMOLED display (~1.4")
- Wide selection of dive modes (SCUBA, multi-gas, CCR, freediving, etc.)
- Air integration and SubWave™ sonar communication
- GPS navigation (multi-band GNSS)
- Smart features (notifications, Garmin Pay, music)
- Comprehensive health and sports tracking
- Premium materials (titanium, sapphire crystal)
- Long battery life
Specifications
General Features:
- Display: AMOLED
- Display size: ~1.4"
- Resolution: ~454 × 454 px
- Lens material: Sapphire
- Case: titanium with reinforced elements
- Water resistance: up to 200 m (20 ATM)
- Weight: ~100–110 g
Diving Features:
- Dive modes:
- SCUBA (single / multi-gas)
- CCR (closed-circuit)
- Freediving
- Gauge mode
- Air integration (transmitter compatible)
- SubWave™ sonar communication between divers
- Decompression calculations
- Dive planning
- Surface interval tracking
- Dive log
- Underwater 3D compass
Sports and Health Features:
- Wrist-based heart rate monitoring
- Pulse Ox (SpO₂)
- Sleep analysis and Body Battery™
- Stress tracking
- VO2 max and training status
- Numerous sports modes (running, cycling, HIIT, swimming, etc.)
Navigation and Connectivity:
- Multi-band GPS / GLONASS / Galileo
- Bluetooth / Wi-Fi
- Garmin Connect compatible
- Smart notifications (calls, messages)
- Garmin Pay and music storage
Battery:
- Smartwatch mode: up to ~25–30 days
- GPS mode: up to ~60–90 hrs
- Dive mode: depends on usage (up to several days of intensive use)
Why choose the Garmin Descent™ Mk3i – 51 mm?
The Garmin Descent™ Mk3i – 51 mm is one of the most advanced dive watches on the market, designed for those who want the maximum range of functionality in a single device.
This means you get:
- a professional-grade dive computer with air integration
- an advanced sports watch with detailed analytics
- a smart device for daily wear
This model is ideal for divers who want the highest level of safety, precision, and innovation – from complex technical dives to daily workouts and an active lifestyle.















