The Descent Mk3s Passivated Steel/Fog Gray dive computer blends rugged performance with sleek design. Featuring a durable stainless steel bezel and a soft fog grey silicone band, it’s built for underwater precision and surface style. With advanced dive modes, multi-GNSS navigation, health tracking, and smartwatch functionality, it’s the perfect companion for divers, athletes, and adventurers alike. Stay connected, dive deeper, and explore smarter with Garmin’s most versatile dive watch.
Descent Mk3s Passivated Steel/Fog Gray- Description
The Descent™ Mk3s delivers powerful dive technology in a compact 43 mm stainless steel form. With smart features, health tracking, and rugged durability, it’s ready for ocean depths and daily life.
Premium Stainless Steel Build
Crafted from high-grade stainless steel for corrosion resistance and long-lasting durability in saltwater environments.
Sleek Fog Grey Silicone Band
Soft, breathable, and secure — designed for comfort during dives and everyday wear.
Compact 43 mm Profile
Smaller form factor ideal for slimmer wrists without compromising on performance or display clarity.
AMOLED Touchscreen Display
Bright, responsive, and easy to read underwater or in direct sunlight.
Sapphire Crystal Lens
Scratch-resistant and ultra-clear for maximum visibility and protection.
Multi-GNSS Navigation
Supports GPS, GLONASS, and Galileo for accurate surface tracking and dive entry points.
Advanced Dive Modes
Includes single-gas, multi-gas, gauge, apnea, and CCR modes for all types of diving.
SubWave™ Sonar Technology
Enables tank pressure monitoring and diver-to-diver messaging with compatible transmitters.
Dive Log Sync
Automatically syncs dive data to the Garmin Dive™ app for easy review and sharing.
Customizable Dive Screens
Tailor your dive interface to show the metrics that matter most to you.
Water Resistance to 100 Meters
Built for recreational and technical diving with robust waterproofing.
Military-Grade Durability
Tested to withstand thermal, shock, and pressure extremes.
Smartwatch Functionality
Receive texts, calls, calendar alerts, and app notifications directly on your wrist.
Garmin Pay™ Contactless Payments
Make secure payments without needing your wallet or phone.
Music Storage & Playback
Download music and connect Bluetooth® headphones for phone-free listening.
Health Monitoring Suite
Includes heart rate, Pulse Ox, stress tracking, hydration, and sleep analysis.
Advanced Sleep Tracking
Monitors sleep stages and provides insights to improve recovery and wellness.
Stress & Recovery Insights
Real-time data helps you manage stress and optimize rest.
Training & Performance Metrics
Track VO2 max, training load, recovery time, and more for peak performance.
Animated Workouts
Follow guided workouts directly on your watch screen with visual cues.
Safety & Tracking Features
LiveTrack and incident detection offer peace of mind during outdoor adventures.
ABC Sensors
Built-in altimeter, barometer, and compass for navigation and dive planning.
Dive Planning Tools
Plan dives with decompression calculations and dive profiles.
QuickFit® Band Compatibility
Easily swap bands for different styles or activities.
Connect IQ™ Store Access
Download custom watch faces, apps, and widgets to personalize your experience.
Wireless Connectivity
Supports Bluetooth®, ANT+®, and Wi-Fi® for seamless syncing and updates.
Long Battery Life
Up to 30 hours in dive mode and 10 days in smartwatch mode.
Solar Charging Compatibility
Works with solar models for extended battery life in sunlight.
Rugged Yet Stylish
Combines robust engineering with a sleek, modern aesthetic.
Garmin Dive™ App Integration
Dive planning, community sharing, and analytics in one powerful app.
Real-Time Dive Alerts
Get notified of decompression limits, ascent rates, and safety stops.
Apnea Mode for Freedivers
Track breath-hold dives with specialized metrics and timers.
CCR Mode for Technical Divers
Supports closed-circuit rebreather diving with customizable settings.
Gauge Mode Simplicity
Use as a basic depth gauge with no decompression calculations.
Dive Compass
Navigate underwater with a digital compass that’s easy to read and use.
Surface Interval Tracking
Monitor recovery time between dives for safe planning.
Descent Mk3s Passivated Steel/Fog Gray - Key Features
SubWave™ Sonar Integration
Supports wireless tank pressure monitoring and diver messaging for enhanced safety and communication underwater.
Multi-GNSS Surface Navigation
Track dive entry and exit points with GPS, GLONASS, and Galileo for precise surface positioning.
Rugged Stainless Steel Design
Built to endure harsh marine environments while maintaining a sleek, professional look.
Smartwatch Capabilities
Stay connected with notifications, calendar alerts, and app syncing—ideal for life above the surface.
Health & Wellness Tracking
Monitor heart rate, sleep, stress, and oxygen levels to optimize your health and recovery.
Music On Your Wrist
Store and play music directly from the watch—perfect for workouts or downtime.
Garmin Pay™
Make secure, contactless payments from your wrist with supported banks and cards.
Training & Fitness Tools
Track workouts, recovery, and performance with advanced metrics and animated guidance.
Wireless Syncing
Connect via Bluetooth®, Wi-Fi®, and ANT+® for fast updates and seamless data sharing.
Dive Compass & Alerts
Navigate underwater with a digital compass and receive real-time alerts for safety and decompression.
Descent Mk3s Passivated Steel/Fog Gray - What Is In The Box
- Descent Mk3, stainless steel with fog grey silicone band
- Fog grey extra-long adjustment strap
- USB-C Clip Charging/Data Cable
- Documentation
Descent Mk3s Passivated Steel/Fog Gray - Specifications
General
| Strap material |
Silicone |
| Lens material |
Sapphire crystal |
| Bezel material |
Stainless steel |
| Case material |
Fibre-reinforced polymer with stainless steel rear cover |
| QuickFit™ watch band compatible |
Yes (20 mm) |
| Physical size |
43 x 43 x 14.15 mm
Fits wrists with the following circumference: Silicone Band: 128-224 mm Extra Long Silicone Band: 128-360 mm |
| Weight |
Mk3 w/o bands: 53.5g
Mk3 w/ Silicone Band: 72.5g
|
| Leakproof inductive buttons |
Yes |
| Display Size |
30.4 mm (1.2”) diameter |
| Display Resolution |
390 x 390 pixels |
| Colour display |
Yes |
| Large font option |
Yes |
| 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 |
| Charging method |
Garmin proprietary clip charger |
| Memory/history |
32 GB |
Clock features
| Time/date |
Yes |
| GPS time sync |
Yes |
| Automatic daylight saving time |
Yes |
| Alarm clock |
Yes |
| Timer |
Yes |
| Stopwatch |
Yes |
| Sunrise/sunset times |
Yes |
Health Monitoring
| Wrist-based heart rate (constant, every second) |
Yes |
| Resting heart rate |
Yes |
| Abnormal Heart Rate Alerts |
Yes (high and low) |
| Respiration Rate |
Yes |
| Fitness Age |
Yes (in app) |
| Body Battery™ Energy Monitor |
Yes |
| All-day Stress |
Yes |
| Relaxation Breathing Timer |
Yes |
| Breathwork |
Yes |
| Sleep |
Yes (Advanced) |
| Nap detection |
Yes |
| Hydration |
Yes (in Garmin Connect™) |
| Women's Health |
Yes (in Garmin Connect™) |
| Skin temperature |
Yes |
| JET LAG ADVISER |
Yes |
Sensors
| GPS |
Yes |
| GLONASS |
Yes |
| Galileo |
Yes |
| SatIQ™ Technology |
Yes |
| Garmin Elevate™ wrist heart rate monitor |
Yes |
| Pulse Ox Blood Oxygen Saturation Monitor |
Yes |
| Barometric altimeter |
Yes |
| Compass |
Yes |
| Gyroscope |
Yes |
| Accelerometer |
Yes |
| Thermometer |
Yes |
| Ambient light sensor |
Yes |
| Depth sensor |
Yes |
Smart Features
| Connectivity |
Bluetooth®, ANT+®, Wi-Fi®, SubWave™ |
| Connect IQ™ (downloadable watch faces, data fields, widgets and apps) |
Yes |
| On-device Connect IQ™ Store |
Yes |
| Smart Notifications |
Yes |
| Text response/reject phone call with text (Android™ only) |
Yes |
| View images from notifications on watch (Android™ only) |
Yes |
| Morning report |
Yes |
| Calendar |
Yes |
| Weather forecasts |
Yes |
| Realtime settings sync with Garmin Connect™ mobile |
Yes |
| Battery Saver - customisable low power watch |
Yes |
| Controls smartphone music |
Yes |
| Plays and controls watch music |
Yes |
| Find my phone |
Yes |
| Find my watch |
Yes |
| Find My Phone during GPS activity |
Yes |
| Compatible with Garmin Messenger app |
Yes |
| VIRB® camera remote |
Yes |
| Smart trainer control |
Yes |
| Compatible with Garmin Connect™ Mobile |
Yes |
| Smartphone compatibility |
iPhone®, Android™ |
| Stocks |
Yes |
| Red shift mode |
Yes |
| Garmin Share |
Yes |
Workout and Training Plans
| Daily Suggested Workout - Running |
Yes |
| Daily Suggested Workout - Cycling |
Yes |
| Garmin Running Coach |
Yes |
| Garmin Running Coach Experts |
Yes |
| Garmin Cycling Coach |
Yes |
| Garmin Coach - Prebuilt Cycling Plans |
Yes |
| Cardio workouts |
Yes |
| Strength workouts |
Yes |
| HIIT workouts |
Yes |
| Yoga workouts |
Yes |
| Pilates workouts |
Yes |
| On-screen workout animations |
Yes |
| On-Screen Workout Muscle Map |
Yes |
Activity profiles
| Gym |
Strength, HIIT, Cardio and Elliptical Training, Stair Stepping, Floor Climbing, Indoor rowing |
| Multisport |
Triathlon, Swimming/Running |
| WELLNESS |
Walking, Pilates, Yoga, Indoor Walking |
| INDOOR RUNNING |
Treadmill Running, Indoor Track Running |
| Outdoor running |
Running, Outdoor Track Running, Trail Running, Ultra Running, Obstacle Course |
| 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, Sailing Expedition, Whitewater, Snorkeling |
| Motor sports |
Motorcycling, Overlanding, Motorcrossing, ATVing, Snowmobile |
| Racket sports |
Tennis, Pickleball, Badminton, Squash, Table Tennis, Padel, Platform Tennis, Racquetball |
| Snow & Winter |
Skiing, Snowboarding, Backcountry Snowboarding, XC Classic Skiing, Backcountry Skiing, Ice Skating, Snowshoeing |
| Sport profiles |
Basketball, Volleyball, Field Hockey, Ice Hockey, Soccer, Football, Lacrosse, Rugby, Ultimate Disc, Cricket, Softball, Baseball |
| In the ring |
Boxing, Mixed martial arts |
| Other activity profiles |
Jumpmaster, Tactical, Inline Skating |
Tracking Features
| Incident Detection during select activities |
Yes |
| Incident detection alert on phone for wearables |
Yes |
| Assistance |
Yes |
| Live Event Sharing |
Yes |
Tactical features
| Ballistics solver |
Yes (unlock required) |
| Dual grid coordinates |
Yes |
| KILL SWITCH |
Yes |
| Night vision mode |
Yes |
| Stealth mode |
Yes |
| XERO™ Locations |
Yes |
Gaming Features
| Gaming activity |
Yes |
| GameOn™ app compatible |
Yes |
Diving features
| Dive activity maximum operating depth |
200 metres |
| Single-gas mode |
Yes |
| Multi-gas mode |
Yes |
| Gauge mode |
Yes |
| APNOEA mode |
Yes |
| APNOEA hunt mode |
Yes |
| Pool Apnea |
Yes |
| Decompression model |
Bühlmann ZHL-16c with gradient factors |
| Nitrox support |
Yes |
| Trimix support |
Yes |
| Closed Circuit Rebreather (CCR) |
Yes |
| Gas mixes |
Air, Nitrox and Trimix, up to 100% O2; 1 bottom gas and up to 11 deco and/or backup gases. |
| PO2 |
Up to 2.0 with customisable deco PO2 setting |
| Auto start/end dive |
Yes |
| Custom end-dive timeout |
Yes (20s to 10m) |
| Safety Stop |
Yes (customisable off/3min/5min) |
| Deep Stops |
Yes (using custom gradient factors) |
| Customisable conservatism |
Yes (low/medium/high or custom using gradient factors) |
| Dive ascent/descent rate indicator |
Yes |
| Automatic altitude adjustment |
Yes |
| No fly time |
Yes |
| Dive planner |
Yes (basic NDL + multi-gas deco planner) |
| Tides |
Yes |
| Backlight |
Yes (configurable time and intensity; auto-on at depth) |
| Automatically saves dive entry and exit locations |
Yes |
| Sync dive log to Garmin Dive™ Mobile app |
Yes |
| Custom dive data screens |
Yes |
| Alerts & alarms |
Audible and vibration alarms for ascent rate, PO2, CNS/OTU, NDL, deco, gas switching, tank pressure, gas consumption rate. Customisable (up to 40) audible and/or vibration per dive mode, based on depth or time |
| 3-axis dive compass |
Yes (with adjustable heading, quick change to 90R, 90L and reciprocal). Indicates degrees and direction back to set heading |
| Missed Deco Lockout |
Yes (can be disabled prior to dive with user acknowledgement) |
| Residual Tissue Loading Reset |
Yes (on the surface with user acknowledgement) |
| Surface diver status widget |
Yes (surface interval, N2/HE loading, CNS, OTU and tissue compartment status) |
Boating features
| Available boating profiles |
Boating, Sailing, Sail Racing |
| Anchor Alarm |
Yes |
| Autopilot control |
Yes |
| Boat data streaming |
CIQ |
| Virtual starting line |
Yes |
| Countdown timer |
Yes |
| Tack assist mode |
Yes |
| Built-in barometer and tide tables |
Yes (downloadable tides) |
| Wearable trolling motor remote |
Yes |
Activity tracking features
| Step counter |
Yes |
| Move alerts (displays on device after a period of inactivity; walk for a couple of minutes to reset it) |
Yes |
| Auto goal (learns your activity level and assigns a daily step goal) |
Yes |
| Calories Burned |
Yes |
| Floors climbed |
Yes |
| Distance travelled |
Yes |
| Intensity minutes |
Yes |
| TrueUp™ |
Yes |
| Move IQ™ |
Yes |
| Garmin Connect™ Challenges app |
Yes (optional Connect IQ app) |
| Automatic rep counting |
Yes |
Running features
| GPS-based distance, time and pace |
Yes |
| Running dynamics |
Yes |
| Vertical oscillation and ratio |
Yes |
| Ground contact time and balance |
Yes |
| Stride length (real time) |
Yes |
| Cadence (provides real-time number of steps per minute) |
Yes |
| Running power |
Yes |
| Grade-adjusted pace |
Yes |
| Performance condition |
Yes |
| Lactate threshold |
Yes (with compatible accessory) |
| PacePro™ Pacing Strategies |
Yes |
| Run workouts |
Yes |
| HILL SCORE |
Yes |
| Trail run auto climb |
Yes |
| Race predictor |
Yes |
| Course- and weather-specific race predictor |
Yes |
| Foot pod capable |
Yes |
| Run/Walk/Stand detection |
Yes |
Golfing features
| Preloaded with 43,000 courses worldwide |
Yes |
| Yardage to F/M/B (distance to front, middle and back of green) |
Yes |
| Yardage to layups/doglegs |
Yes |
| Measures shot distance (calculates exact yardage for shots from anywhere on course) |
Automatic |
| Digital scorecard |
Yes |
| Custom targets |
Yes |
| Stat tracking (strokes, putts per round, greens and fairways hit) |
Yes |
| Garmin AutoShot™ |
Yes |
| Full vector map |
Yes |
| Auto CourseView updates |
Yes |
| Green View with manual pin position |
Yes |
| Hazards and course targets |
Yes |
| PinPointer |
Yes |
| PlaysLike distance |
Yes |
| Touch-targeting (touch target on display to see the distance to any point) |
Yes |
| Handicap scoring |
Yes |
| Tempo Training |
Yes |
| Round timer/odometer |
Yes |
| Automatic club tracking compatible (requires accessory) |
Yes |
| Wind speed and direction (requires connection to the golf app) |
Yes |
| VIRTUAL CADDIE |
Yes |
| Pairs with Garmin Golf app |
Yes |
| Tournament legal |
Yes |
| Green Contours (with Garmin Golf membership) |
Yes |
Outdoor recreation
| Point-to-point navigation |
Yes |
| Breadcrumb trail in real time |
Yes |
| Back to start |
Yes |
| TracBack® |
Yes |
| UltraTrac mode |
Yes |
| Explore Nearby |
Yes |
| REFERENCE POINT |
Yes |
| Up Ahead |
Yes |
| NextFork™ navigation |
Yes |
| Elevation profile |
Yes |
| Distance to destination |
Yes |
| Barometric trend indicator with storm alert |
Yes |
| ClimbPro™ Ascent Planner |
Yes |
| Vertical speed |
Yes |
| Total ascent/descent |
Yes |
| Rest Timer (Ultra Run only) |
Yes |
| Auto Rest |
Yes |
| Future elevation plot |
Yes |
| Preloaded road and trail maps |
Yes |
| Preloaded ski resort maps |
Yes |
| Downloadable cartography support |
Yes |
| GPS coordinates |
Yes |
| Sight 'N Go |
Yes |
| Area calculation |
Yes (via Connect IQ™) |
| Fish forecast |
Yes |
| Projected waypoint |
Yes |
| Sun and moon information |
Yes |
| Expedition GPS Activity |
Yes |
| Tides |
Yes |
| Tides Glance |
Yes |
Cycling features
| Courses |
Yes |
| Bike lap and lap maximum power (with power sensor) |
Yes |
| Race an activity |
Yes |
| Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories) |
Yes |
| FTP (Functional Threshold Power) |
Yes (with compatible accessory) |
| Power curve and % FTP workouts |
Yes |
| Garmin cycle map (routable cycling-specific street map) |
Yes |
| MTB Grit & Flow |
Yes |
| Advanced cycling dynamics |
Yes |
| Compatible with Vector™ and Rally™ (power meters) |
Yes |
| Compatible with Varia Vision™ (head-mounted display) |
Yes |
| Compatible with Varia™ radar (rear-facing radar) |
Yes |
| Compatible with Varia™ lights |
Yes |
| Compatible with Varia headlight camera |
Yes |
| Speed and cadence sensor support (w/sensor) |
Yes |
| Power meter compatible |
Yes |
| Power guide |
Yes |
Swimming features
| Open-water swim metrics (distance, pace, stroke count/rate, stroke distance, swim efficiency (SWOLF), calories) |
Yes |
| Pool swim metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories) |
Yes |
| Stroke type detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only) |
Yes |
| Drill logging (pool swim only) |
Yes |
| Basic rest timer (up from 0) (pool swim only) |
Yes |
| "Repeat on" rest timer (pool swim only) |
Yes |
| Auto rest (pool swim only) |
Yes |
| Time and distance alerts |
Yes |
| Pacing alerts (pool swim only) |
Yes |
| Countdown start |
Yes |
| Pool swim workouts |
Yes |
| Critical swim speed |
Yes |
| Underwater wrist-based heart rate |
Yes |
| Heart rate from external HRM (real-time during rests, interval and session stats during rests, and automatic heart rate download post-swim) |
Yes (with HRM-Tri, HRM-Swim, HRM-Pro or HRM-Pro Plus) |
Kid activity tracking features
| Toe-to-Toe™ Challenges app |
Yes (optional Connect IQ Toe-to-Toe™ Challenges app) |
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