Garmin
Garmin Descent Mk3 Range
£1,099.99 – £1,599.99
The Garmin Descent Mk3 and Mk3i computers are sumfink else… they don’t just have the basics; they enhance your dive with cutting-edge features – we’ve never seen anything like this before!
We love its Diver Readiness Tool that checks if you’re fit for the dive, considering everything from your sleep to your stress levels. And with the groundbreaking SubWave technology, you can communicate with your buddies underwater by sending them messages.
If you’re looking to add a transmitter to keep on top of your gas management, then you’ll need the Mk3i model.
The Honest Truth
Nic
Co-Founder
The fact that the Garmin Descent Mk3 computers monitor if you’re fit to dive just blows my mind. I’m very into Human Factors in Diving stuff, and this could be just another little tool to help me make good decisions. Learn even more about being Fit-To-Dive here.
Dive deeper with the Garmin Descent Mk3 and Mk3i, an advanced dive computer and smartwatch designed to enhance your underwater adventures.
With unique Garmin innovations, this device prepares you for the dive and supports your active lifestyle on land.
Enjoy the flexibility of multiple dive modes and up to 30 hours of battery life in dive mode.
Explore the underwater world with DiveView™ colour maps, showcasing depth contours and dive sites.
Share and review your dives effortlessly with the Garmin Dive™ smartphone app, and use the Dive Readiness Tool for optimal preparation.
The Garmin Descent Mk3i goes a step further by introducing SubWave™ sonar-based communication and diver monitoring, keeping you connected with your dive team through innovative air integration. This model retains all the beloved features of the Mk3, including the DiveView™ maps, multiple dive modes, and the Dive Readiness Tool, all while deepening your confidence with the same robust 200-metre dive rating.
| SLEEP SCORE AND INSIGHTS | ✓ |
| BATTERY LIFE (SMARTWATCH MODE) | 43mm: Up to 10 days (4 days always-on)
51mm: Up to 25 days (10 days always-on) |
| BUILT-IN MAPPING | ✓ |
| DAILY SUGGESTED WORKOUTS | ✓ |
| PULSE OX BLOOD OXYGEN SATURATION | ✓ |
| GARMIN PAY™ | ✓ |
| MULTI-BAND GPS | ✓ |
| MUSIC STORAGE | ✓ |
| TRAINING READINESS | ✓ |
| TRAINING STATUS | ✓ |
| WATCH DISPLAY TYPE | AMOLED |
| TOUCHSCREEN | ✓ |
| WATCH WATER RATING | Dive (200 metres) |
| SPECIFICATION | Descent Mk3 43mm | Descent Mk3i 43mm | Descent Mk3i 51mm |
|---|---|---|---|
| AIR INTEGRATION | X | ✓ | ✓ |
| LED FLASHLIGHT | X | X | ✓ |
| LENS MATERIAL | Sapphire crystal | ||
| BEZEL MATERIAL | Stainless steel | Diamond-Like Carbon (DLC) Coated Titanium or Bronze PVD Coated Titanium | Diamond-like Carbon (DLC) coated titanium |
| CASE MATERIAL | Fibre-reinforced polymer with stainless steel rear cover | Fibre-reinforced polymer with titanium rear cover | Fibre-reinforced polymer with titanium rear cover |
| QUICKFIT™ WATCH BAND COMPATIBLE | Yes (20 mm) | Yes (20 mm) | Yes (26 mm) |
| STRAP MATERIAL | Silicone | Silicone | Silicone or DLC coated titanium |
| PHYSICAL SIZE | 43 x 43 x 14.15 mm | 43 x 43 x 14.13 mm | 51 x 51 x 16.4 mm |
| WEIGHT | No bands: 53.5g Silicone band: 72.5g |
No bands: 49.3g Silicone band: 68.3g |
No bands: 77.8 g Silicone band: 105.6 g Titanium band: 165.9 g |
| DISPLAY SIZE | 30.4 mm (1.2”) diameter | 30.4 mm (1.2”) diameter | 35.56 mm (1.4”) diameter |
| DISPLAY RESOLUTION | 390 x 390 pixels | 390 x 390 pixels | 454 x 454 pixels |
| COLOUR DISPLAY | ✓ | ✓ | ✓ |
| LARGE FONT OPTION | ✓ | ✓ | ✓ |
| BATTERY LIFE | Smartwatch: Up to 10 days Battery saver watch mode: Up to 12 days GPS Only: Up to 28 hours All Satellite Systems: Up to 20 hours All Satellite Systems + Multi-band: Up to 17 hours 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 |
Smartwatch: Up to 10 days Battery saver watch mode: Up to 12 days GPS Only: Up to 28 hours All Satellite Systems: Up to 20 hours All Satellite Systems + Multi-band: Up to 17 hours 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 |
Smartwatch: Up to 25 days Battery saver watch mode: Up to 31 days GPS Only: Up to 76 hours All Satellite Systems: Up to 55 hours All Satellite Systems + Multi-band: Up to 48 hours All Satellite Systems + Music: Up to 17 hours Max Battery GPS: Up to 118 hours Expedition GPS: Up to 24 days Dive mode: up to 66 hours Dive Mode with Air Integration: Up to 40 hours |
| CHARGING METHOD | Garmin proprietary clip charger | ||
| MEMORY/HISTORY | 32GB | ||
| FEATURE | Specification |
|---|---|
| Maximum Operating Depth | 200 metres |
| Single-Gas Mode | ✓ |
| Multi-Gas Mode | ✓ |
| Gauge Mode | ✓ |
| Apnoea Mode | ✓ |
| Apnoea Hunt Mode | ✓ |
| Decompression Model | Bühlmann ZHL-16c with gradient factors |
| Nitrox Support | ✓ |
| Trimix Support | ✓ |
| Closed Circuit Rebreather (CCR) | |
| 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 | ✓ (Mk3i only) |
| Air Integration | ✓ (via Subwave™, Mk3i only) |
| Number of Transmitters Supported | 8 (Mk3i only) |
| ACTIVITY PROFILE | Activities |
|---|---|
| GYM | Strength, HIIT, Cardio and Elliptical Training, Stair Stepping, Floor Climbing, Indoor rowing |
| MULTISPORT | Triathlon, Swimming/Running |
| WELLNESS | Walking, Pilates, Yoga |
| INDOOR RUNNING | Treadmill Running, Indoor Track Running |
| OUTDOOR RUNNING | Running, Outdoor Track Running, Trail Running, Ultra Running, Obstacle Course Running |
| 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, Snowmobiling |
| 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 |
