Premium, all-in-one dive computer and adventure smartwatch.

The Garmin Descent Mk 3i blends comprehensive dive features with a rugged smartwatch platform. Choose between the 51 mm model for maximal display and battery life or the more streamlined 43 mm version—both offer air integration, multiple dive modes, GPS, and top-tier training tools.

Key Benefits

• Total dive versatility Modes for Scuba, CCR, Freedive, Gauge, Apnea, Opal, and more, plus dive planning and post-dive log syncing
• Smartwatch built-in Fenix-level GPS, navigation, training, and health tools right on your wrist
• Air integration support Pairs with Descent T2/T2s transmitters for real-time tank pressure monitoring
• Always visible touchscreen MIP display is easy to read in any light and works wet or dry
• Long battery life Dive mode lasts up to 40 hrs; smartwatch mode keeps going for weeks
• Premium build DLC or PVD titanium exudes durability and corrosion resistance

Key Specifications

• Weight 51 mm ~127 g (4.5 oz); 43 mm ~110 g (3.9 oz)
• Display 1.2-in (31 mm) MIP touchscreen
• Battery Life ~40 hrs dive mode; ~16 days smartwatch mode
• Navigation GPS, GLONASS, Galileo and ABC sensors
• Connectivity Bluetooth®, ANT+, Wi-Fi
• Depth Rating 100 m / 10 ATM
• Warranty One-year limited warranty covering defects; does not cover damage from misuse, unapproved accessories, or wear and tear. Repair or replacement at Garmin's discretion.

Whether you're technical diving or training at the surface, the Descent Mk 3i delivers unmatched flexibility, dependable battery life, and full-featured smartwatch capabilities—all backed by Garmin’s standard one-year reliability guarantee.