Amazfit T-Rex 3
Rugged outdoor smartwatch with military-grade durability and diving features
Where to Buy
€249 / $279Prices and availability are subject to change. We may earn commission from these links.
Overview
The Amazfit T-Rex 3 is a rugged outdoor smartwatch designed for adventurers, featuring military-grade durability, 10ATM water resistance, and comprehensive diving capabilities up to 45m. It combines a stainless steel bezel with high-strength polymer case, ultra-bright 2,000 nit AMOLED display, and advanced features including offline maps, AI assistant, and up to 27 days of battery life.
Technical Specifications
Physical Specs
| Case Size (mm) | 48.5 x 48.5 x 13.75 mm |
| Weight (g) | 68.3 |
| Case Material | High-strength polymer |
| Bezel Material | Stainless Steel |
| Lens Material | Corning Gorilla Glass |
| Strap Material | Liquid Silicone |
| Water Resistance Rating | 10 ATM (EN13319, ISO 6425) |
Display
| Type | AMOLED |
| Size (inches) | 1.5 |
| Resolution (pixels) | 480 x 480 pixels |
| Brightness (nits) | 2000 |
Hardware
| Chipset | ZPS3044 |
| RAM | 64 MB |
| Storage | 32 GB |
Battery
| Typical Use | Up to 27 days |
| Heavy Usage | Up to 13 days |
| GPS Mode | Accurate Mode: Up to 42 hours, Long Battery Life Mode: Up to 114 hours, Max Battery Life: Up to 180 hours |
| Charging Time | 3 |
| Wireless Charging | Yes |
Diving - General Info
| EN 13319 Certified | Yes |
| Max Operational Depth Metres | 45 |
Diving - Scuba Features
| Supported | No |
| Safety Features | Not designed for scuba diving. Certifications apply only to freediving/snorkeling. |
Diving - Freedive Features
| Supported | Yes |
| Max Depth (m) | 45 |
| Modes | Freediving, Spearfishing |
| Auto Depth Tracking | Yes |
| Surface Interval Tracking | Yes |
Smart Features
| Operating System | Zepp OS 4 |
| Health Monitoring Summary | Blood Oxygen, Heart Rate, Sleep Tracking, Stress Monitoring, Breath Training, Temperature Monitoring |
| Activity Tracking Summary | 170+ workout modes, Step Counter, Calories Burned, Swim Tracking, Dual-Band GPS, HYROX Race Mode |
| Smart Functions | Notifications, Music Control, Weather, Alarms, Timer, Stopwatch, Find My Phone |
| Payment System | NFC Payments (EU) |
| Music Storage And Playback | Yes |
| Voice Assistant | AI Assistant (GPT-4o based) |
| Emergency Features | Fall Detection, SOS |
| Navigation Features Summary | Dual-Band GPS, Route Import/Export, Track Back, Waypoints, Offline Maps, Contour Maps |
| Other Notable Features | Night Display Mode, Glove Mode, Microphone, Speaker |
Max Depth: 45m
EN13319 Certified: Yes
Pros
- Military-grade durability with stainless steel bezel
- Excellent battery life (up to 27 days in typical use)
- Bright 1.5" AMOLED display (2,000 nits)
- Free diving capabilities up to 45m
- Comprehensive offline maps and navigation
- Over 170 sports modes including HYROX Race Mode
- Dual-Band GPS for accurate tracking
- AI features with voice control and GPT-4o integration
- Night display mode and glove mode
- Large 32GB storage
Cons
- No decompression diving support
- Limited third-party app ecosystem
- No ECG functionality
- Relatively heavy at 68.3g with strap
- Basic smart features compared to Wear OS/Apple Watch