Engineered for elite divers and adventure seekers, the Mk3si SKF12 PVD Ti/French Gray combines cutting-edge dive technology with premium design. Featuring a 43 mm bronze PVD titanium bezel, French gray silicone band, and air integration support, it’s built for underwater precision and surface style. With multi-GNSS, dive log syncing, and smartwatch functionality, it’s the ultimate companion for deep-sea exploration and everyday performance.
Descent Mk3si SKF12 PVD Ti/French Gray- Description
The Mk3si SKF12 PVD Ti/French Gray delivers advanced dive metrics, air integration, and premium materials in a compact 43 mm form. Designed for underwater accuracy and surface versatility, it’s built to perform.

Premium Dive Watch Design : Crafted with bronze PVD titanium and a sleek French gray silicone band for durability and style.
Compact Yet Powerful: At 43 mm, it offers full dive functionality in a smaller, wrist-friendly profile.
Air Integration Ready : Supports SubWave™ sonar technology for tank pressure monitoring and diver-to-diver messaging.
Multi-GNSS Navigation: Access GPS, GLONASS, and Galileo for precise surface tracking and dive entry points.
Dive Modes Galore: Includes single-gas, multi-gas, gauge, apnea, and closed-circuit rebreather (CCR) modes.
Customizable Dive Screens: Tailor your dive data display to match your preferences and dive style.
Dive Log Sync: Automatically syncs dive logs with the Garmin Dive™ app for easy review and sharing.
Smartwatch Capabilities: Receive notifications, track fitness, and control music—all from your wrist.
Rugged Build: Tested to military standards for thermal, shock, and water resistance.
Long Battery Life: Enjoy up to 30 hours in dive mode and up to 10 days in smartwatch mode.
Health Monitoring: Includes heart rate, Pulse Ox, sleep tracking, and stress monitoring.
Touchscreen + Buttons: Intuitive interface with responsive touchscreen and physical buttons for underwater use.
Wireless Connectivity: Supports Bluetooth®, ANT+®, and Wi-Fi® for seamless syncing and updates.
Dive Safety Features: Features like decompression tracking and NDL alerts enhance underwater safety.
Garmin Dive™ App Integration: Dive planning, community sharing, and detailed analytics at your fingertips.
Stylish Everyday Wear: Its elegant bronze finish and neutral band make it suitable for both dives and dinners.
Water Resistance: Rated to 100 meters, perfect for recreational and technical diving.
Training & Fitness Tools: Includes VO2 max, recovery time, training load, and more for athletes.
Music Storage: Store and play music directly from your watch with compatible headphones.
Garmin Pay™: Contactless payments for convenience on the go.
Custom Watch Faces: Personalize your display with downloadable faces from the Connect IQ™ store.
Safety & Tracking: Live Track and incident detection features for peace of mind.
Altimeter, Barometer, Compass: Built-in ABC sensors for outdoor navigation and dive planning.
Dive Computer Replacement: Fully replaces traditional dive computers with advanced metrics and reliability.
Durable Silicone Band: Comfortable, secure, and resistant to saltwater and wear.
QuickFit® Band Compatibility: Easily swap bands for different occasions or activities.
Advanced Sleep Tracking: Monitors sleep stages and provides insights for better recovery.
Stress & Recovery Insights: Helps manage daily stress and optimize rest with real-time data.
Solar Charging (Optional): Compatible with solar models for extended battery life in sunlight.

Descent Mk3si SKF12 PVD Ti/French Gray - Key Features
SubWave™ Sonar Technology: Enables tank pressure monitoring and diver-to-diver communication for enhanced safety.
Multi-GNSS Support: Track your location with GPS, GLONASS, and Galileo—essential for dive entry and exit.
Compact 43 mm Design: Smaller form factor without sacrificing performance or display clarity.
Military-Grade Durability: Built to withstand harsh environments with thermal, shock, and water resistance.
Smartwatch Integration: Stay connected with calls, texts, calendar alerts, and app notifications.
Health & Wellness Tracking: Includes heart rate, Pulse Ox, sleep, hydration, and stress metrics.
Music On the Go: Download and play music directly from your watch—no phone needed.
Garmin Pay™: Make secure, contactless payments from your wrist.
Training & Performance Metrics: Track workouts, recovery, and performance with advanced fitness tools.
Wireless Syncing: Connect via Bluetooth®, Wi-Fi®, and ANT+® for seamless updates and data sharing.
Descent Mk3si SKF12 PVD Ti/French Gray - What's in the Box
- Descent Mk3si SKF12 PVD Ti/French Gray
- Descent Mk3i – 43 mm, bronze PVD titanium with French grey silicone band
- French grey extra-long adjustment strap
- USB-C Clip Charging/Data Cable
- Documentation

Descent Mk3si SKF12 PVD Ti/French Gray - Specifications
General
Strap material |
Silicone |
Lens material |
Sapphire crystal |
Bezel material |
Diamond-Like Carbon (DLC) Coated Titanium or Bronze PVD Coated Titanium |
Case material |
Fibre-reinforced polymer with titanium rear cover |
QuickFit™ watch band compatible |
Yes (20 mm) |
Physical size |
43 x 43 x 14.13 mm Fits wrists with the following circumference: Silicone band: 135-230 mm Extra long silicone band: 135-355 mm
|
Weight |
Mk3i w/o bands: 49.3g Mk3i w/ Silicone Band: 68.3g
|
Leakproof inductive buttons |
|
Display Size |
30.4 mm (1.2”) diameter |
Display Resolution |
390 x 390 pixels |
Colour 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 |
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™) |
JET LAG ADVISER |
Yes (in Garmin Connect™) |
Health Snapshot |
Yes |
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 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 |
Safety and 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 |
Subwave™ Support |
Yes |
Air integration |
Yes (via Subwave™) |
Number of transmitters supported |
8 |
Gas time remaining |
Yes |
Gas consumption rate |
Yes |
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 |
Training, Planning and Analysis Features
Customisable screen(s) |
Yes |
Downloadable training plans |
Yes |
Course guidance |
Yes |
HR Zones |
Yes |
HR Alerts |
Yes |
HR Calories |
Yes |
% HR Max |
Yes |
% HRR |
Yes |
Recovery Time |
Yes |
Auto Max HR |
Yes |
Race glance/widget |
Yes |
HRV Status |
Yes |
HRV stress test (measures your heart rate variability while standing still, for 3 minutes, to provide you with an estimated stress level; the scale of this is 1 to 100; low scores indicate lower stress levels) |
Yes (with compatible accessory) |
HR Broadcast (broadcasts HR data over ANT+® to paired devices) |
Yes |
Respiration Rate (During Exercise) |
Yes (with compatible accessory) |
GPS speed and distance |
Yes |
Customisable activity profiles |
Yes |
Auto Pause® automatic timer halt |
Yes |
Interval training |
Yes |
Improved interval (includes open repeats, intervals data page, rest screen and auto detection) |
Yes |
Advanced workouts |
Yes |
Power Modes - customisable in-activity battery settings |
Yes |
HRM running pace and distance |
Yes |
Auto Lap® |
Yes |
Manual lap |
Yes |
Rest timer |
Yes |
Configurable lap alerts |
Yes |
Heat and Altitude Acclimation |
Yes |
VO2 Max (Run) |
Yes |
VO2 Max (Trail Run) |
Yes |
Realtime Stamina |
Yes |
ENDURANCE SCORE |
Yes |
Load ratio |
Yes |
Training Load |
Yes |
Training load focus |
Yes |
Training Effect |
Yes |
Training Effect (Anaerobic) |
Yes |
Primary benefit (Training Effect labels) |
Yes |
Improved Recovery Time |
Yes |
Customisable alerts |
Yes |
Voice alerts |
Yes |
Finish time |
Yes |
Virtual partner |
Yes |
Race an activity |
Yes |
Multi-sport |
Yes |
Garmin Live Segments |
Yes |
Strava Live Segments |
Yes |
Round-trip course creator (running/cycling) |
Yes |
Trendline™ Popularity Routing |
Yes |
Touch and/or button lock |
Yes |
Shortcuts |
Yes |
Auto scroll |
Yes |
Activity history on watch |
Yes |
Physio TrueUp |
Yes |
Unified Training Status |
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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