Garmin Descent Mk3
Technical dive computer with 200m depth rating and AMOLED display
Where to Buy
€999 / $1199Prices and availability are subject to change. We may earn commission from these links.
Overview
The Garmin Descent Mk3 is a 200m-rated technical dive computer featuring a 1.2" AMOLED touchscreen, Bühlmann ZHL-16C algorithm, and 30-hour dive mode battery life. Designed for CCR, trimix, and multi-gas diving, it combines rugged stainless steel construction with smartwatch functionality.
Technical Specifications
Physical Specs
| Case Size (mm) | 43 x 43 x 14.15 mm |
| Weight (g) | 72.5 |
| Case Material | Fiber-reinforced polymer |
| Bezel Material | Stainless steel |
| Lens Material | Sapphire crystal |
| Back Material | Stainless steel |
| Strap Material | QuickFit 22mm silicone |
| Water Resistance Rating | 20 ATM (EN13319) |
Display
| Type | AMOLED touchscreen |
| Size (inches) | 1.2 |
| Resolution (pixels) | 390 x 390 pixels |
| Features | Sapphire crystal, auto-backlight |
Hardware
| Chipset | Garmin Proprietary |
| Storage | 32GB |
Battery
| Smartwatch Mode | Up to 10 days (4 days Always-On) |
| Typical Use | Up to 10 days |
| GPS Mode | Up to 28 hours |
| Dive Mode | Up to 30 hours |
| Expedition Mode | Up to 10 days |
| Wireless Charging | No |
Diving - General Info
| EN 13319 Certified | Yes |
| Max Operational Depth Metres | 200 |
Diving - Scuba Features
| Supported | Yes |
| Dive Modes | CCR, Multi-Gas (12 mixes), Trimix |
| Decompression Model | Bühlmann ZHL-16C with Gradient Factors |
| Gas Mixes Supported | Air, Nitrox (5-100% O₂), Trimix |
| Max PO2 (bar) | 2 |
| Air Integration | No |
| Dive Log Capacity | 200 dives |
| Safety Features | Ascent Rate Alerts, No-Fly Timer, Dive Readiness Analytics |
| Dive Computer Functionality | Built-in full-featured dive computer |
Diving - Freedive Features
| Supported | Yes |
| Max Depth (m) | 200 |
| Modes | Apnea Hunt, Pool Apnea, DYN, DYNB, DNF, STA, CNF, CWT, CWTB, FIM, VWT, NLT |
| Depth Tracking Accuracy | ±0.1m |
| Auto Depth Tracking | Yes |
| Surface Interval Tracking | Yes |
| Safety Alerts | Customizable depth thresholds |
Smart Features
| Operating System | Garmin OS |
| Health Monitoring Summary | Pulse Ox, Wrist HR, Sleep Score, Dive Readiness |
| Activity Tracking Summary | 150+ sports modes, ClimbPro, Heat Acclimation |
| Smart Functions | Garmin Pay, Smart Notifications |
| Payment System | Garmin Pay |
| Music Storage And Playback | Yes |
| Voice Assistant | No |
| Emergency Features | Incident Detection, LiveTrack |
| Navigation Features Summary | TOPO maps, TracBack, Tide/Surf Data, Dual-frequency GNSS |
| Other Notable Features | ANT+ connectivity |
Max Depth: 200m
EN13319 Certified: Yes
Pros
- 200m depth rating with EN13319 compliance
- 1.2" AMOLED touchscreen
- Supports CCR and 12 gas mixes
- Dive Readiness health analytics
- Dual-frequency GPS
Cons
- No built-in air integration (requires Mk3i)
- Complex menu system
- High price point
- Limited smart features vs consumer watches