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Garmin Descent Mk3i 51mm Dive Smartwatch

Garmin Descent Mk3i 51mm Dive Smartwatch

by Garmin
Save up to 16% Save 16%
$1,599.99
$1,599.99 - $1,799.99
$1,599.99
$1,349.99
$1,349.99 - $1,549.99
$1,349.99

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Garmin Descent Mk3i 51mm Dive Smartwatch

The Garmin Descent Mk3i is a revolutionary air-integrated dive computer and GPS smartwatch built for deep, connected exploration. Featuring a vibrant 1.2" AMOLED display, 200-meter dive rating, sapphire lens, and inductive metal buttons, it’s built for technical diving and extreme durability. With SubWave™ sonar technology, you can monitor tank pressure (when paired with up to 8 Descent™ T2 transceivers), send diver-to-diver messages, and keep track of your dive team—all without surfacing. DiveView™ color maps, multi-gas dive modes, surface GPS, and a personalized Dive Readiness Tool ensure you’re fully prepared for every dive.

Out of the water, the Mk3i transitions seamlessly into your daily life with multisport training, smart notifications, music storage, Garmin Pay™, and advanced health tracking features like VO2 max, Pulse Ox, sleep monitoring, and Jet Lag Adviser. Preloaded topo, ski, and golf maps plus turn-by-turn navigation make it your go-anywhere adventure companion. With up to 30 hours of battery life in dive mode and smartwatch features that rival any premium wearable, the Descent Mk3i is the most advanced dive smartwatch Garmin has ever made.




Features

Features

  • Air integration with Descent™ T2 transceivers (sold separately)
  • SubWave sonar networking with diver-to-diver messaging and pressure monitoring
  • Multiple dive modes including nitrox, trimix, gauge, apnea, and rebreather
  • Dive readiness tool based on sleep, exercise, stress, and jet lag
  • DiveView maps with bathymetric contours and 4,000+ dive sites
  • Bright 1.2" AMOLED display, sapphire lens, 200m dive-rated case
  • Dive log with sharing via Garmin Dive™ app
  • Up to 30 hours battery in dive mode; 10 days in smartwatch mode
  • Customizable dive modes with user-defined fields
  • Surface GPS to track dive entry and exit points
  • Garmin Dive™ app auto-syncs dive logs
  • Lume Mode for night vision with ambient light sensor
  • Underwater compass with built-in ABC sensors
  • GPS Reference Point for surface navigation to dive sites
  • Variometer for freedive descent/ascent feedback
  • Big Numbers Mode for simplified dive screen readability
  • Tide data via paired smartphone
  • inReach® compatible for off-grid satellite messaging
  • Preloaded sports apps: trail running, swimming, biking, rowing, golf, more
  • Surf activity tracking: wave count, speed, distance
  • Surfline® camera + Sessions™ video and surf forecast widget
  • Backcountry ski and snowboard metrics including cadence and stride
  • VO2 max for fitness level monitoring
  • Recovery time recommendations after training


  • Daily suggested workouts adapting to progress
  • Animated workouts for cardio, strength, yoga, Pilates
  • Wrist-based heart rate monitoring
  • Pulse Ox sensor for blood oxygen and altitude awareness
  • Jet lag adviser with light/sleep/exercise guidance
  • Endurance score based on VO2 max and training load
  • Hill score for uphill strength and endurance
  • Garmin Coach with dynamic training plans
  • Sleep monitoring with stages, score, and insights
  • Women’s health tracking for menstrual cycle or pregnancy
  • SatIQ™ tech for optimized multi-band GPS accuracy
  • Multicontinent TopoActive maps preloaded
  • SkiView™ maps for 2,000+ ski resorts
  • ABC sensors: altimeter, barometer, compass
  • PacePro™ strategy planning for GPS-based race pacing
  • Turn-by-turn navigation with Garmin Connect™ or 3rd-party courses
  • Round-trip routing with TrendLine™ popularity data
  • Safety and tracking: sends location if incident occurs
  • Music storage and playback from Spotify, Deezer, Amazon Music
  • Garmin Pay™ contactless payments
  • Smart notifications for calls, texts, and emails
  • Connect IQ™ store access for apps, watch faces, and more
More Features


Specifications

Sleep score and insights ✓
Battery life (smartwatch mode) Up to 10 days (4 days always-on)
Built-in mapping ✓
Pulse Ox blood oxygen ✓
Garmin Pay™ ✓
Multi-band GPS ✓
Music storage ✓
Training readiness ✓
Training status yes (improved)
Display type AMOLED
Touchscreen ✓
Water rating Dive (200 meters)
Strap material silicone
Lens Material sapphire crystal
Bezel Material Diamond-like Carbon (DLC) coated titanium or bronze PVD coated titanium
Case material fiber-reinforced polymer with titanium rear cover
QuickFit® watch band compatible yes (20 mm)
Physical size 43 x 43 x 14.3 mm
Fits wrists Silicone band: 128-224 mm
Extra long silicone band: 128-360 mm
Weight no band: 49.3 g
silicone band: 68.3 g
Leakproof inductive buttons ✓
Display Size 1.2” (30.4 mm) diameter
Display resolution 390 x 390 pixels
Color display ✓
Large font option ✓
Battery life Smartwatch: Up to 10 days (4 days always-on)
Battery Saver Watch Mode: Up to 12 days
GPS Only: Up to 28 hours (22 hours always-on)
All Satellite Systems: Up to 20 hours (16 hours always-on)
All Satellite Systems + Multi-band: Up to 17 hours (14 hours always-on)
All Satellite Systems + Music: Up to 6 hours
Max Battery GPS: Up to 44 hours
Expedition GPS: Up to 10 days
Dive Mode: Up to 30 hours
Dive Mode with Air Integration: Up to 15 hours
Charging method Garmin proprietary clip charger
Memory/History 32 GB
Time/date ✓
GPS Time Sync ✓
Automatic daylight saving time ✓
Alarm clock ✓
Timer ✓
Stopwatch ✓
Sunrise/sunset times ✓
Wrist-based heart rate (constant, every second) ✓
Resting heart rate ✓
Abnormal heart rate alerts ✓ (high and low)
Respiration rate ✓
Fitness age ✓ (in app)
Body Battery™ energy monitor ✓
All-day stress ✓
Relaxation breathing timer ✓
Breathwork ✓
Sleep ✓ (advanced)
Nap detection ✓
Hydration ✓ (in Garmin Connect™)
Women's health ✓ (in Garmin Connect™)
Health snapshot ✓
Skin temperature ✓
Jet lag adviser ✓
GPS ✓
GLONASS ✓
Galileo ✓
SatIQ™ Technology ✓
Garmin Elevate™ wrist heart rate monitor ✓
Pulse Ox Blood Oxygen Saturation Monitor ✓
Barometric altimeter ✓
Compass ✓
Gyroscope ✓
Accelerometer ✓
Thermometer ✓
Ambient light sensor ✓
Depth sensor ✓
Connectivity BLUETOOTH®, ANT+®, Wi-Fi®, Subwave™
Connect IQ™ (downloadable watch faces, data fields and apps) ✓
On-device Connect IQ™ Store ✓
Smart Notifications ✓
Text response/reject phone call with text (Android™ only) ✓
View images from notifications on watch (Android™ only) ✓
Morning report ✓
Calendar ✓
Weather forecasts ✓
Realtime settings sync with Garmin Connect™ mobile ✓
Battery saver (customizable low power watch) ✓
Controls smartphone music ✓
Plays and controls watch music ✓
Find My Phone ✓
Find My Watch ✓
Find My Phone during GPS activity ✓
Compatible with Garmin Messenger app ✓
VIRB® Remote ✓
Smart trainer control ✓
Pairs with Garmin Connect™ Mobile ✓
Smartphone compatibility iPhone®, Android™
Stocks ✓
Red shift mode ✓
Garmin Share ✓