Garmin Descent™ Mk2i w/ Descent T1

Battery for days, up to 16 days in smartwatch mode to be exact (up to 32 hours in dive mode when used with Descent T1). More battery means knowing more about your overall health and performance—above and below the surface. This dive computer smartwatch works with your phone. All your health, fitness & dive stats in one place—no subscription required. Monitor your gas and depth1 with the advanced, watch-style dive computer that comes with multisport training and smart features. Air-integrated dive computer for you and your dive buddies.

FEATURES

Air Integration Capable
Pair with the included Descent T1 transmitter to monitor tank pressure, air-consumption rate, and dive time, providing full dive-computer functionality for you and your dive-buddy.

Dive Modes
Supports multiple dive modes: single-gas, multi-gas (Nitrox/Trimix), gauge, apnea, closed-circuit rebreather (CCR), giving you the flexibility needed for recreational and technical diving.

Body Battery Energy Monitoring
Tracks your stress, heart rate, sleep and activity level to estimate your body’s energy reserves and show when you should push harder or recover.

Heart Rate Monitoring
Continuously samples your wrist-based heart rate and alerts you if your resting heart rate remains unusually high or low—both underwater (where supported) and on land.

Sleep Monitoring & Advanced Score
Provides a sleep score along with insightful breakdowns of your sleep stages (light, deep, REM), as well as respiration tracking to help you recover better.

GPS & Multisport Smartwatch
Includes full multisport smartwatch features: GPS tracking, route navigation, training analytics, swimming, running, cycling and more—just like a premium fitness watch.

Smart Notifications & Music
Receive smartphone emails, texts and alerts on your wrist. Store and play music directly from the watch for phone-free listening during workouts or dives.

Garmin Pay
Use contactless payments straight from your watch (where supported) to breeze through checkout lines—wallet optional.

Water Rating
Rated for diving to 100 metres (10 ATM), making this watch suitable for serious dives, swimming, showers and everyday water exposure.

Durability & Premium Materials
Constructed with a DLC-coated titanium bezel, fibre-reinforced polymer case and sapphire lens (model variant dependent), built to endure tough underwater and outdoor environments.

SPECIFICATIONS

Watch Display Type: Sunlight-visible, transflective memory-in-pixel (MIP) colour display

Touchscreen: Yes (with buttons)

Water Rating: Dive rating to 100 m (10 ATM)

Strap Material: Silicone (standard) or titanium (variant dependent)

Lens Material: Sapphire crystal

Bezel / Case Material: Diamond-like Carbon (DLC) coated titanium bezel & fibre-reinforced polymer case

Quick Release Bands: Yes (26 mm standard width)

Physical Size: 52 × 52 × 17.8 mm

Weight: Approx. 99.6 g (with silicone strap)

Display Size: 1.4″ (35.56 mm) diameter

Display Resolution: 280 × 280 pixels

Battery Life: Smartwatch mode – up to 16 days; Dive mode (with T1) – up to 32 hours; Max Battery GPS mode – up to 96 hours

Charging Interface: Proprietary charging/data cable

Memory / History: 32 GB internal storage

Clock Features: Time/date, GPS time sync, automatic daylight saving time, alarm, timer, stopwatch, sunrise/sunset times

Sensors: Wrist heart rate monitor, Pulse Ox sensor, barometric altimeter, 3-axis compass, gyroscope, accelerometer, thermometer, depth sensor

Connectivity: Bluetooth®, ANT+®, Wi-Fi®

Smartphone Compatibility: iPhone®, Android™

Smart Features: Smart notifications, text response/reject call (Android only), calendar, weather, music playback & control, Find My Phone, Garmin Connect™ Mobile compatibility

Health & Wellness Monitoring: Continuous HR, resting HR, abnormal HR alerts, all-day stress tracking, respiration rate, Body Battery™, sleep tracking with score, hydration tracking, women’s health tracking

Activity Profiles: Running (indoor/outdoor), cycling (indoor/outdoor), swimming (pool/open-water), strength training, HIIT, hiking, skiing/snowboarding, paddle sports

Activity Tracking Features: Step count, move alerts, auto goal, calories burned, floors climbed, intensity minutes, TrueUp™, Move IQ™

Training & Analysis Features: Custom data pages, downloadable training plans, VO₂ max (run), running dynamics, recovery advisor, load monitoring

Running Features: GPS-based time/distance/pace, cadence, stride length, run/walk detection

Cycling Features: Time/distance/HR alerts; supports external speed/cadence sensors (ANT+/BLE)

Swimming Features: Pool metrics (lengths, distance, pace, stroke count, SWOLF); underwater HR (in compatible environments)

Outdoor Recreation: Back to Start, sun & moon info, breadcrumb navigation, map or route tracking

Safety & Tracking Features: Incident detection (select activities), LiveTrack, Assistance messaging

Kid Activity Tracking: Optional via Garmin Connect™ Challenges

Battery Runtime (General Use): Up to 16 days typical use

Durability: Built for diving and outdoor exploration—swim-proof, shock and weather resistant

In the Box: Descent™ Mk2i watch, Descent T1 transmitter, charging/data cable, documentation