Garmin Quatix 8 Pro
Marine GPS smartwatch with built-in inReach satellite, LTE cellular, and EN13319 dive capabilities
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Overview
The Garmin Quatix 8 Pro is a premium marine smartwatch that adds built-in inReach satellite connectivity and LTE-M cellular to the Quatix 8 platform — no separate inReach device required. Released January 2026, it features two-way satellite messaging, 24/7 SOS through Garmin Response, voice calls, and off-shore connectivity up to 50 miles. It carries the same EN13319-certified 40m dive computer as the standard Quatix 8 with Bühlmann ZHL-16C decompression, plus a new Enhanced Boat Mode for deeper chartplotter integration. The 47mm titanium-bezel case pairs a 1.4" 2000-nit AMOLED display with Elevate Gen 5 heart rate and ECG sensors.
Technical Specifications
Physical Specs
| Case Size (mm) | 47x47x16mm |
| Weight (g) | 56 |
| Case Material | Fiber-Reinforced Polymer |
| Bezel Material | Titanium |
| Lens Material | Sapphire Crystal |
| Back Material | Steel |
| Strap Material | Silicone QuickFit 22mm |
| Water Resistance Rating | 10 ATM (EN13319 compliant to 40m) |
Display
| Type | AMOLED touchscreen |
| Size (inches) | 1.4 |
| Resolution (pixels) | 454x454 |
| Brightness (nits) | 2000 |
| Features | Always-On Display, High-contrast marine mode, Sapphire crystal |
Hardware
| Chipset | Garmin Proprietary |
| Storage | 32GB |
| Neural Engine | No |
Battery
| Smartwatch Mode | Up to 15 days (8 days Always-On) |
| Typical Use | Up to 15 days |
| Low Power Mode | Up to 19 days |
| GPS Mode | Up to 44 hours |
| Expedition Mode | Up to 14 days |
| Wireless Charging | No |
Diving - General Info
| EN 13319 Certified | Yes |
| Max Operational Depth Metres | 40 |
Diving - Scuba Features
| Supported | Yes |
| Dive Modes | Single-gas, Multi-gas (5 mixes), Gauge, CCR |
| Decompression Model | Bühlmann ZHL-16C with Gradient Factors |
| Gas Mixes Supported | Nitrox (21-40% O₂) |
| Max PO2 (bar) | 1.6 |
| Air Integration | No |
| Safety Features | Ascent rate monitoring, No-fly timer, Surface interval timer |
| Dive Computer Functionality | Built-in recreational dive computer |
| Limitations | Recreational depth limit 40m; no air integration |
Diving - Freedive Features
| Supported | Yes |
| Max Depth (m) | 40 |
| Modes | Apnea, Apnea Hunt |
| Depth Tracking Accuracy | ±0.1m |
| Auto Depth Tracking | Yes |
| Surface Interval Tracking | Yes |
| Safety Alerts | Customizable depth alerts, Surface interval timer |
Smart Features
| Operating System | Garmin OS |
| Health Monitoring Summary | Garmin ECG App, HRV Status, Pulse Ox, Sleep Coach, Wrist Temperature, Training Readiness, Endurance Score, Hill Score |
| Activity Tracking Summary | 200+ sports modes, Daily suggested workouts, HIIT workouts, ClimbPro, Hill Score |
| Smart Functions | Satellite text messaging (inReach), Cellular voice calls, Voice messages (30-second), Location check-ins, LiveTrack sharing, Weather forecasts, Garmin Pay, Music storage, Smart notifications |
| Payment System | Garmin Pay |
| Music Storage And Playback | Yes |
| Voice Assistant | Yes |
| Emergency Features | inReach SOS (24/7 Garmin Response Center), Two-way satellite messaging, Incident Detection, LiveTrack, Man Overboard (MOB) |
| Navigation Features Summary | Marine TOPO maps, SatIQ GPS, Track Back, Multi-band GNSS, Tide data, Anchor alarm, Marine charts integration |
| Other Notable Features | LED flashlight, Storm alerts, Marine weather, Enhanced Boat Mode, Off-shore connectivity up to 50 miles |
| Marine Features | Anchor Alarm with Drift Alert, Sailing Race Timer with Virtual Starting Line, Tide Data & Charts, Wind Speed & Direction, Tack Assist, Layline Guidance, Regatta Timer, Autopilot Control, Fusion-Link Audio Control, Sail Racing Modes, Man Overboard (MOB), Enhanced Boat Mode, NMEA 2000 & ANT+ connectivity, Marine Charts Integration |
Max Depth: 40m
EN13319 Certified: Yes
Pros
- Built-in inReach satellite + LTE cellular — no separate device needed
- Enhanced Boat Mode for deeper chartplotter and vessel integration
- ECG and Elevate Gen 5 heart rate sensor
- Two-way satellite messaging and SOS via Garmin Response
- Comprehensive marine features (anchor alarm, MOB, sailing race timer)
Cons
- Shorter battery life than standard Quatix 8 (15 days vs 29 days)
- 47mm only — no 51mm option
- Thicker case (16mm vs 13.8mm on standard Quatix 8)
- Higher price than standard Quatix 8
- Marine satellite subscription required for inReach features