The Garmin Descent MK3i dive computer can be paired with the Garmin Descent T2 Transceiver for integrated pressure monitoring on up to eight tanks, via the SubWave Sonar Data network. This groundbreaking technology allows divers to exchange preset dive-related messages to up to 30m depth, along with pressure and depth monitoring for up to 8 divers within a range of 10 metres (coming soon via required software update). It offers multiple dive modes for both single and multiple gas dives (including nitrox and trimix), gauge, apnea, apnea hunt and closed-circuit rebreather. To allow you to be perfectly prepared and safe for any type of diving, the Garmin Descent MK3i also shows how lifestyle factors (sleep, stress, jetlag etc) can affect your body. Orientate yourself when diving with colour maps offering bathymetric depth contours to help you discover new dive destinations. The vibrant 1.4 inch Amoled colour display, sapphire lends and 200 metre dive-rated case, along with leakproof metal inductive buttons means that you can take the Descent MK3i as deep as you like, with full trust.

The Garmin Descent MK3i is available in different sizes and colours according to your preference. Check out the full range in the Garmin collection.

Features:

• Built-in LED flashlight with various light intensities and strobe modes.
• Dive log shareable via the Garmin dive app.
• Battery life up to 66 hours in dive mode.
• Customizable dive modes.
• Surface GPS tracks entry and exit points.
• Garmin Dive apps syncs and uploads dive logs automatically.
• Lune mode for low light conditions
• Built in dive compass.
• GPS reference tool
• Variometer to monitor freedive descents and ascents
• Big numbers mode gives simplified dive screen
• Tide data gives information on ocean conditions.
• InReach Device Compatible can be paired for satellite messaging.

Please note there is currently an approximate one-week wait time on this product.

FAQs

Q: What is the Garmin Descent Mk3i and who is it for?

A: The Garmin Descent Mk3i is a premium dive computer and multisport smartwatch designed for recreational and technical divers. It combines advanced dive functions (including multi-gas support, freediving, gauge mode and rebreather support) with everyday smartwatch features like fitness tracking, GPS and smart notifications.

Q: What dive modes does the Descent Mk3i support?

A: This dive computer supports multiple dive modes, including single-gas, multi-gas (Air, Nitrox, Trimix), gauge, apnea, apnea hunt and closed-circuit rebreather. It also includes customizable decompression and safety stop features.

Q: How deep can I dive with it?

A: The Descent Mk3i is rated to 200 m (20 ATM), making it suitable for most recreational and many technical dives.

Q: Does it have a compass and navigation tools?

A: Yes — it features a three-axis dive compass and GPS capabilities that record entry and exit points, which can be viewed in the Garmin Dive app after your dive.

Q: What unique features does this model offer?

A: The Mk3i includes SubWave™ sonar technology for optional diver-to-diver messaging and tank pressure monitoring (using compatible accessories), a built-in LED flashlight with multiple modes, and a high-resolution AMOLED display that’s easy to read both underwater and on land.

Q: How long does the battery last?

A: Battery life varies by mode:
• Dive mode: up to ~66 hours
• Smartwatch mode: up to ~25 days
• GPS tracking: varying durations depending on settings. These figures depend on usage and settings such as always-on display and satellite mode.

Q: Can I use this as a regular smartwatch?

A: Yes — when not diving, the Descent Mk3i functions as a full smartwatch with features like Garmin Pay™, music storage, health and training metrics, smart notifications and multi-sport tracking.

Q: Does it sync with an app?

A: Yes — dive logs, profiles, GPS data and activity history can be synced wirelessly to the Garmin Dive app, where you can review or share dives and track progress over time.

Q: Is the display easy to read underwater?

A: The large 1.4″ AMOLED colour display provides excellent readability in low-light and bright conditions. The touchscreen works on land, while physical buttons are recommended for underwater navigation.

Q: What materials is it made from?

A: The 51 mm model features a carbon grey DLC-coated titanium bezel, a fibre-reinforced polymer case with titanium rear, and a scratch-resistant sapphire crystal lens, all designed for rugged, long-lasting use.