Garmin · Diving
The Garmin Descent™ Mk3i – 51 mm in Carbon Gray DLC Titanium with DLC Titanium Band is a premium dive computer and GPS smartwatch built for serious time in the water and structured training on land. It combines air integration and SubWave™ sonar networking with multisport performance tools and everyday smart features for an active schedule.
A bright 1.4” AMOLED color display with a sapphire crystal lens supports clear readability, while a dive-rated case and leakproof metal inductive buttons are designed for demanding conditions. With up to 66 hours in dive mode and up to 25 days in smartwatch mode, it’s suited for divers and athletes who want long-lasting battery life, detailed logging, and confident navigation between adventures.
Connectivity
SubWave™ sonar networking lets divers exchange preset diver-to-diver messages up to 30 meters. It can also monitor tank pressures and depth for up to 8 divers within a range of 10 meters, helping keep key information close at hand during a dive.
Navigation
DiveView™ color maps provide bathymetric depth contours and include more than 4,000 dive sites. These on-wrist maps are designed to help divers get oriented and discover new locations while keeping navigation information accessible without leaving the dive watch interface.
Durability
An integrated LED flashlight supports use above or below water, with variable light intensities and strobe modes. It adds practical visibility for low-light conditions, whether checking gear at the surface or improving awareness during darker environments.
Descent™ Mk3i supports air integration via SubWave™ when paired with Descent™ T2 transceivers (sold separately), enabling integrated pressure monitoring on up to 8 tanks. It also supports sidemount tank switch guidance when paired with a Descent™ T2 transceiver, providing visual reminders to switch tanks at a preset pressure value for more controlled gas management.
Multiple dive modes cover single and multiple gas dives (including nitrox and trimix), gauge, apnea, apnea hunt and closed-circuit rebreather. The device uses Bühlmann ZHL-16c with gradient factors and includes NDL Aware™ depth metrics to show how depth changes can impact no-decompression limit (NDL) in real time. Big Numbers Mode can simplify the display with larger critical data.
Beyond diving, the watch includes a wide range of activity profiles plus training tools such as training status, VO2 Max, recovery time, daily suggested workouts and Garmin Coach. For navigation, it features SatIQ™ technology with multi-band GPS, ABC sensors and preloaded TopoActive maps from around the world, plus turn-by-turn directions and round-trip routing. Smart notifications require pairing with a compatible iPhone® or Android™ smartphone, and music downloads may require a subscription.
| Part Number | 010-02752-13 |
|---|---|
| Model | Descent™ Mk3i – 51 mm |
| Configuration | Carbon Gray DLC Titanium with DLC Titanium Band |
| Battery life (smartwatch mode) | Up to 25 days (10 days always-on) |
| Training status | Yes (improved) |
| Display type | AMOLED |
| Water rating | Dive (200 meters) |
| Strap material | Silicone or DLC coated titanium |
| Lens material | Sapphire crystal |
| Bezel material | Diamond-like Carbon (DLC) coated titanium or silver and black PVD coated titanium |
| Case material | Fiber-reinforced polymer with titanium rear cover |
| QuickFit® watch band compatible | Yes (26 mm) |
| Physical size | 51 x 51 x 16.4 mm; Fits wrists with the following circumference: Silicone band: 135-230 mm; Extra long silicone band: 135-355 mm; Titanium bracelet: 135-220 mm |
| Weight (no bands) | 77.8 g |
| Weight (silicone band) | 105.6 g |
| Weight (titanium band) | 165.9 g |
| Display Size | 1.4” diameter (35.56 mm) |
| Display resolution | 454 x 454 pixels |
| Battery life (Battery Saver Watch Mode) | Up to 31 days |
| Battery life (GPS Only) | Up to 76 hours (56 hours always-on) |
| Battery life (All Satellite Systems) | Up to 55 hours (43 hours always-on) |
| Battery life (All Satellite Systems + Multi-band) | Up to 48 hours (38 hours always-on) |
| Battery life (All Satellite Systems + Music) | Up to 17 hours |
| Battery life (Max Battery GPS) | Up to 118 hours |
| Battery life (Expedition GPS) | Up to 24 days |
| Battery life (Dive Mode) | Up to 66 hours |
| Battery life (Dive Mode with Air Integration) | Up to 40 hours |
| Charging method | Garmin proprietary clip charger |
| Memory/History | 32 GB |
| Descent Mk3i – 51 mm, carbon gray DLC titanium with black silicone band |
| Descent T2 transmitter |
| Black extra-long adjustment strap |
| USB-C clip charging/data cable |
| Air spool |
| Documentation |
| Gym | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing |
|---|---|
| Multisport | Swimming/Running, Triathlon |
| Wellness | Walking, Pilates, Yoga, Indoor Walking |
| Indoor running | Treadmill Running, Indoor Track Running, Virtual Running |
| Outdoor running | Running, Outdoor Track Running, Trail Running, Ultra Running, Obstacle Racing |
| Outdoor recreation | Hiking, Indoor Climbing, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery |
| Cycling | Biking, Road Biking, Mountain Biking, Gravel Biking, Bike Commuting, Bike Touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, BMX |
| Swim | Pool Swimming, Open Water Swimming |
| On the water | Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Fishing, Boating, Sailing, Sail Racing, Water Skiing, Wakeboarding, Wakesurfing, Tubing, Snorkeling, Sailing Expedition, Whitewater |
| Motor sports | Motorcycling, Overlanding, Motocrossing, ATVing, Snowmobiling |
| Racket sports | Tennis, Pickleball, Badminton, Squash, Table Tennis, Padel, Platform Tennis, Racquetball |
| Snow and winter | Skiing, Snowboarding, Backcountry Snowboarding, XC Classic Skiing, Backcountry Skiing, Ice Skating, Snowshoeing |
| Team sports | Basketball, Volleyball, Field Hockey, Ice Hockey, Football/Soccer, American Football, Lacrosse, Rugby, Ultimate Disc, Cricket, Softball, Baseball |
| In the ring | Boxing, Mixed Martial Arts |
| Dive | Diving |
| Other activity profiles | Jumpmaster, Tactical, Inline Skating |
| What You'll Love | Sleep score and insights, Built-in mapping, Pulse Ox blood oxygen, LED flashlight, Garmin Pay™, Multi-band GPS, Music storage, Training readiness, Touchscreen |
|---|---|
| General | Leakproof inductive buttons, Color display, Large font option |
| Clock Features | Time/date, GPS Time Sync, Automatic daylight saving time, Alarm clock, Timer, Stopwatch, Sunrise/sunset times |
| Health & Wellness Monitoring | Heart rate (constant, every second), Resting heart rate, Respiration rate, Body Battery™ energy monitor, All-day stress, Relaxation breathing timer, Breathwork, Nap detection, Health snapshot, Skin temperature and 1 more |
| Sensors | GPS, GLONASS, Galileo, SatIQ™ technology, Garmin Elevate™ wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Barometric altimeter, Compass, Gyroscope, Accelerometer and 3 more |
| Daily Smart Features | Find My Phone, Find My Garmin (helps locate lost device), Find My Phone during GPS activity, 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 and 11 more |
| Workout and Training Plans | Daily suggested workout - Running (pace and heart rate based), Daily suggested workout - Cycling (pace and heart rate based), Garmin running coach, Garmin running coach experts, Garmin cycling coach, Garmin Coach - Prebuilt cycling plans, Cardio workouts, Strength workouts, HIIT workouts, Yoga workouts and 3 more |
| Safety and Tracking Features | Incident detection during select activities, Incident detection alert on phone for wearables, Assistance, Live event sharing |
| Tactical Features | Dual grid coordinates, Kill switch, Night vision mode, Stealth mode, XERO™ Locations |
| Gaming Features | Gaming Activity, GameOn™ app compatible |
| Diving Features | Single-gas mode, Multi-gas mode, Gauge mode, APNEA mode, APNEA hunt mode, Pool APNEA, Nitrox support, Trimix support, Closed Circuit Rebreather (CCR), Subwave™ support and 13 more |
| Boating Features | Anchor Alarm, Autopilot Control, Virtual starting line, Countdown timer, Tack assist mode, Wearable trolling motor remote |
| Activity Tracking Features | Step counter, Move alerts (displays on device after a period of inactivity), Auto goal (learns your activity level and assigns a daily step goal), Calories burned, Floors climbed, Distance traveled, Intensity minutes, TrueUp™, Move IQ™, Automatic rep counting |
| Training, Planning and Analysis Features | Improved interval (includes open repeats, intervals data page, rest screen and auto detection), Customizable data pages, Downloadable training plans, Course guidance, HR zones, HR alerts, HR calories, % HR max, % HRR, Recovery time and 42 more |
| Running Features | GPS-based distance, time and pace, Running dynamics, Vertical oscillation and ratio, Ground contact time and balance, Stride length (real time), Cadence (provides real-time number of steps per minute), Running power, Grade-adjusted pace, Performance condition, PacePro™ pacing strategies and 7 more |
| Golfing Features | Preloaded with 43,000 courses worldwide, Yardage to F/M/B (distance to front, middle and back of green), Yardage to layups/doglegs, Digital scorecard, Custom targets, Stat tracking (strokes, putts per round, greens and fairways hit), Garmin AutoShot™, Full vector map, Auto CourseView updates, Green View with manual pin position and 14 more |
| Outdoor Recreation | Projected waypoint, UltraTrac mode, Elevation profile, Distance to destination, Barometric trend indicator with storm alert, Vertical speed, Total ascent/descent, Rest timer (ultra run only), Auto rest, Future elevation plot and 7 more |
| Mapping & Navigation | Point-to-point navigation, Bread crumb trail in real time, Back to start, TracBack®, Explore Nearby, Reference point, Up Ahead, ClimbPro™ Ascent Planner, NextFork™ navigation, Preloaded road and trail maps and 2 more |
| Cycling Features | Courses, Bike lap and lap maximum power (with power sensor), Race an activity, Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories), Power curve and % FTP workouts, Cycle Map (routable cycling-specific street map), MTB Grit & Flow, Advanced cycling dynamics, Compatible with Vector™ and Rally™ (power meters), Compatible with Varia Vision™ (head-mounted display) and 6 more |
| Swimming Features | Open-water swim metrics (distance, pace, stroke count/rate, stroke distance, swim efficiency (SWOLF), calories), Pool swim metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories), Stroke type detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only), Drill logging (pool swim only), Basic rest timer (up from 0) (pool swim only), "Repeat on" rest timer (pool swim only), Auto rest (pool swim only), Time and distance alerts, Pacing alerts (pool swim only), Countdown start (pool swim only) and 3 more |
| Abnormal heart rate alerts | Yes (high and low) |
|---|---|
| Fitness age | Yes (in app) |
| Sleep | Yes (advanced) |
| Hydration | Yes (in Garmin Connect™) |
| Women's health | Yes (in Garmin Connect™) |
| Connectivity | Bluetooth®, ANT+®, Wi-Fi®, Subwave™ |
|---|---|
| Smartphone compatibility | IPhone®, Android™ |
| Dive activity maximum operating depth | 200 meters |
|---|---|
| Decompression model | Bühlmann ZHL-16c with gradient factors |
| Gas mixes | Air, Nitrox and Trimix, up to 100% O2; 1 bottom gas and up to 11 deco and/or backup gasses. |
| PO2 | Up to 2.0 with customizable deco PO2 setting |
| Air integration | Yes (via Subwave™) |
| Number of transmitters supported | 8 |
| Custom end-dive timeout | Yes (20s to 10 m) |
| Safety stop | Yes (customizable off/3min/5min) |
| Deep stops | Yes (using custom gradient factors) |
| Customizable conservatism | Yes (low/medium/high or custom using gradient factors) |
| Dive planner | Yes (basic NDL + multi-gas deco planner) |
| Backlight | Yes (configurable time and intensity; auto-on at depth) |
| Available Boating Profiles | Boating, Sailing, Sail Racing |
|---|---|
| Boat Data Streaming | CIQ |
| Built-in barometer and tide tables | Yes (downloadable tides) |
Additional equipment (sold separately) and device pairing required
Sold 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.
When paired with the Garmin Connect smart-device app and the Surfline smart-device app
Activity tracking and fitness metric accuracy
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.
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. Breathing Variations not available in all countries.
When paired with your compatible smartphone. See safety and tracking feature requirements and limitations. Feature not available while in dive mode.
SPOTIFY and the Spotify logo are among the registered trademarks of Spotify AB. Amazon Music and all related logos are trademarks of Amazon.com, Inc. or its affiliates. iPhone is a trademark of Apple Inc., registered in the U.S. and other countries. Android is a trademark of Google LLC.
