Amazfit T-Rex Ultra 2
Grade 5 titanium dive watch with Bühlmann ZHL-16C, 45m depth rating, 64GB storage, and built-in flashlight
Where to Buy
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Overview
The Amazfit T-Rex Ultra 2 is an EN13319-certified dive smartwatch built around a Grade 5 titanium case. Released February 2026, it features the Bühlmann ZHL-16C decompression algorithm, 45-meter depth rating, and four dedicated dive modes including recreational scuba, outdoor and indoor freediving, and spearfishing. With 64GB storage, a 1.5" 480×480 AMOLED display at 3000 nits, a built-in LED flashlight, and MIL-STD-810H certification, the T-Rex Ultra 2 packs flagship dive capabilities at a significantly lower price than Garmin's Descent line.
Technical Specifications
Physical Specs
| Case Size (mm) | 51mm |
| Weight (g) | 89.2g (with strap) |
| Case Material | Grade 5 Titanium |
| Bezel Material | Titanium |
| Lens Material | Sapphire Crystal |
| Back Material | Titanium |
| Strap Material | Silicone |
| Water Resistance Rating | 10 ATM (EN13319:2000 certified to 45m) |
Display
| Type | AMOLED touchscreen |
| Size (inches) | 1.5 |
| Resolution (pixels) | 480x480 |
| Brightness (nits) | 3000 |
| Features | Sapphire crystal, Always-on display |
Hardware
| Chipset | Amazfit Proprietary |
| Storage | 64GB |
Battery
| Smartwatch Mode | Up to 30 days |
| Typical Use | Up to 30 days |
| Heavy Usage | Up to 15 days |
| GPS Mode | Up to 50 hours |
| Wireless Charging | No |
Diving - General Info
| EN 13319 Certified | Yes |
| Max Operational Depth Metres | 45 |
Diving - Scuba Features
| Supported | Yes |
| Dive Modes | Air Mode, Nitrox Mode, Multi-gas |
| Decompression Model | Bühlmann ZHL-16C with adjustable conservatism (high/medium/low) |
| Gas Mixes Supported | Air, Nitrox (enriched air) |
| Max PO2 (bar) | PO₂ alerts supported |
| Air Integration | No |
| Safety Features | Auto Start/End Detection (4-5ft depth), Safety Stop alerts (5m/15ft), Real-time TTS (Time to Surface), NDL (No-Decompression Limit) alerts, Decompression ceiling alerts, PO₂ alerts, Depth & Time alerts, No-Fly Time tracking, Water temperature monitoring, Dive compass (3-axis) |
| Dive Computer Functionality | Full recreational dive computer with Bühlmann ZHL-16C algorithm, adjustable conservatism, and comprehensive safety features |
| Limitations | Recreational diving only; No air integration; No technical diving support |
Diving - Freedive Features
| Supported | Yes |
| Max Depth (m) | 45 |
| Modes | Freediving, Spearfishing |
| Auto Depth Tracking | Yes |
| Surface Interval Tracking | Yes |
| Safety Alerts | Depth alerts, Time alerts, Water temperature monitoring |
Smart Features
| Operating System | Zepp OS |
| Health Monitoring Summary | Pulse Ox, Wrist HR, Sleep Score, Stress Monitoring |
| Activity Tracking Summary | 180+ sports modes, Route navigation, Training load |
| Smart Functions | Zepp Pay, Smart Notifications, Alexa integration |
| Payment System | Zepp Pay |
| Music Storage And Playback | Yes |
| Voice Assistant | Yes |
| Emergency Features | Fall detection, Emergency SOS |
| Navigation Features Summary | Offline maps, Route back, Dual-frequency GNSS |
| Other Notable Features | Built-in LED flashlight, MIL-STD-810H certified |
Max Depth: 45m
EN13319 Certified: Yes
Pros
- Grade 5 titanium build at a fraction of Garmin Descent pricing
- EN13319 certified with Bühlmann ZHL-16C decompression algorithm
- 64GB onboard storage
- Built-in LED flashlight
- 3000-nit AMOLED display for excellent sunlight/underwater visibility
Cons
- 45m depth limit
- No wireless air integration
- Zepp OS has fewer third-party dive apps than Garmin Connect IQ
- No cellular/satellite connectivity