Garmin Descent Mk3i Series – 51mm

Discover a deeper connection with the Descent Mk3i watch-style dive computer. Purpose-built specifically for divers, the series combines a bright 1.4″ AMOLED display with scratch-resistant sapphire lens, 200-meter dive-rated case, metal leakproof inductive buttons and multiple dive modes for recreational to technical scuba diving and freediving. The Mk3i features SubWave™ sonar technology for diver-to-diver communication via preset messages (coming soon via software update¹), and also supports monitoring of tank pressures, depth and distance (coming soon via software update¹) for up to 8 divers, when paired with the Descent T2 transceiver (sold separately). A built-in LED flashlight keeps you going in low-light conditions, above or below water. DiveView™ maps offer bathymetric depth contours and more than 4,000 dive sites to help you find where to dive and get oriented. Plus, a dive readiness tool, developed by Garmin, shows how lifestyle factors such as sleep, exercise, stress and jet lag can affect your body’s overall preparedness for diving — so, ultimately, you can make better-informed dive plan decisions.

NEW Features in the Descent Mk3i – 51mm Series (vs. Descent Mk2i)

ADVANCED WATCH-STYLE DIVE COMPUTER

Advanced, watch-style dive computer features a stunning 1.4″ AMOLED touchscreen color display, scratch-resistant sapphire lens with 43 mm bezel

DIVE-FOCUSED DESIGN

Dive-first design with 200-meter dive-rated case includes metal leakproof inductive buttons and multiple dive modes for recreational to technical scuba diving and freediving.

AIR INTEGRATION

Pair the Descent Mk3i dive computers with the Descent T2 transceivers (sold separately) for integrated pressure monitoring on up to 8 tanks via the SubWave™ sonar data network.

SUBWAVE SONAR NETWORKING

Enhanced SubWave sonar technology provides the ability to exchange preset diver-to-diver messages (coming soon via software update¹) up to 30 meters as well as monitor tank pressures, depth and distance (coming soon via software update¹) for up to 8 divers within a range of 10 meters, when paired with the Descent T2 transceiver (sold separately) for group dive support.

BUILT-IN LED FLASHLIGHT

Descent Mk3i – 51 mm dive computers feature a built-in LED flashlight with variable intensities and strobe modes, giving you greater visibility in low-light conditions — above or below water — and providing a bright, steady beam in either red or white light

DIVE READINESS TOOL

A dive readiness tool, developed by Garmin, shows how lifestyle factors such as sleep, exercise, stress and jet lag can affect your body’s overall preparedness for diving — offering guidance that can help you make better-informed dive plan decisions (data presented is intended to be a close estimation of metrics tracked).

DIVEVIEW MAPS

DiveView color maps on your wrist offer bathymetric depth contours and more than 4,000 dive sites to help you discover new places to dive and get oriented.

SATIQ TECHNOLOGY

With SatIQ technology, you get superior positioning accuracy with multi-band GPS while optimizing battery life.

LUME MODE

Use lume mode to aid readability and help maintain night vision; an ambient light sensor gives a green luminescence to your watch face in low-light conditions.

BATTERY LIFE

Stay in the water longer with up to 66 hours in dive mode plus up to 25 days in smartwatch mode.

Plus, All the Same Great Features

DIVE MODES

Get multiple dive modes for single and multiple gas dives (including nitrox and trimix), gauge, apnea, apnea hunt and closed-circuit rebreather. Add extra screens for each dive mode that features the fields you want to see with customizable dive modes.

DIVE LOG

The dive log feature automatically syncs with the Garmin Dive™ app on your compatible smartphone, allowing you to share and review data, track gear, post photos, take notes and more.

GARMIN DIVE APP

Pair the Garmin Dive app with your Descent Mk3 series dive computer to automatically sync and upload your dive logs.

SURFACE GPS

Track your entry and exit point² on the surface with advanced satellite connectivity.

DIVE COMPASS

Easily navigate below the waterline with the built-in 3-axis underwater compass.

BIG NUMBERS MODE

Get a simplified dive screen on your wrist, with larger text to see critical diving data.

REFERENCE POINT

Use this GPS tool for surface navigation to a dive site, so you can drop right onto your target every time.

VARIOMETER

The variometer tool helps you monitor your freedive descent and ascent rates through tone and vibration feedback.

TIDE DATA

Stay up to date on ocean conditions by pairing your Descent Mk3 series dive computer with your compatible smartphone.

INREACH ® DEVICE COMPATIBLE

Pair with inReach devices³ and the inReach ® dive case for satellite messaging off-grid.

SPORTS APPS / SURF ACTIVITY

Use preloaded activity profiles for trail running, swimming, running, biking, hiking, rowing, skiing, golfing and more. Plus, use the surf activity feature to record the number of waves surfed, maximum speed reached, distance traveled and more.

ADVANCED TRAINING FEATURES

View advanced training metrics⁴ that include running dynamics, heat- and altitude-adjusted VO2 max, trail run VO2 max, recovery time, endurance score, hill score, Garmin Coach and more.

HEALTH AND WELLNESS MONITORING

Get 24/7 health and wellness monitoring with wrist-based heart rate⁴, advanced sleep monitoring⁴, respiration tracking, daily suggested workouts, Pulse Ox⁵ sensor and jet lag advisor.

NAVIGATION AND ORIENTATION FEATURES

Use preloaded TopoActive maps, SkiView™ maps, PacePro™ technology, courses with turn-by-turn directions, round-trip routing, and built-in ABC sensors including altimeter, barometer and 3-axis electronic compass.

CONNECTED LIFESTYLE FEATURES

Enjoy everyday wearability, and live connected with safety and tracking features⁶ , smart notifications (when paired with compatible smartphone), music storage, Garmin Pay™ contactless payments, Connect IQ™ Store and more.

WRIST-BASED HEART RATE

The watch constantly samples your heart rate to help you gauge how hard you work during activities.

PULSE OX SENSOR

Track your blood oxygen saturation while you’re awake or asleep, and gain awareness of how you’re adapting to altitude.

¹Diver messaging and diver distance features coming soon; requires software version 15.70 or later.
²GPS tracking does not work underwater
³Sold separately; active satellite subscription required. Some jurisdictions regulate or prohibit the use of satellite communication devices. It is the responsibility of the user to know and follow all applicable laws in the jurisdictions where the device is intended to be used.
⁴ Activity tracking and fitness metric accuracy
⁵ This is not a medical device and is not intended for use in the diagnosis or monitoring of any medical condition; see Garmin.com/ataccuracy. Pulse Ox not available in all countries.
⁶ When paired with your compatible smartphone. See safety and tracking feature requirements and limitations. Feature not available while in dive mode.