Amazfit T-Rex Ultra vs Apple Watch SE 2 (2023)
Side-by-side specifications, scores and verdict.
Quick Verdict
Amazfit T-Rex Ultra dominates endurance with exceptional 20-day battery life and robust build quality featuring stainless steel bezels and 10 ATM water resistance certified for free-diving. Its 1.39-inch AMOLED display (454x454) delivers vibrant visuals with always-on capability. However, Apple Watch SE 2 compensates with superior ecosystem integration, faster S8 processor, NFC for payments, cellular options, and watchOS 10's refined software experience. Battery drops to 18 hours standard use, though Low Power Mode extends functionality. SE 2 weighs just 26.4g versus T-Rex Ultra's 89g. SE 2 includes Wi-Fi connectivity absent on Amazfit. Both omit ECG and skin temperature monitoring. For outdoor enthusiasts prioritizing ruggedness and battery longevity, T-Rex Ultra excels. For iPhone users valuing seamless integration and payment features, SE 2 is superior despite higher price relative to battery life.
Full Specifications
| Specification | Amazfit T-Rex Ultra | Apple Watch SE 2 (2023) |
|---|---|---|
| Software | Zepp OS 2.0 | watchOS 10 |
| Body | ||
| Weight | 89 g | 26.4 g |
| Case material | Stainless steel bezel, fiber-reinforced polymer case | Recycled aluminum |
| Water resistance | 10 ATM, ISO 22810 certified for free-diving to 45m | WR50 |
| Health & Sensors | ||
| ECG | ||
| SpO₂ | ||
| Skin temperature | ||
| Heart rate | ||
| Sleep tracking | ||
| Battery | ||
| Battery life | Up to 20 days typical use, 80 hours GPS | Up to 18 hrs, up to 36 hrs Low Power Mode |
| Display | ||
| Size | 1.39 inch | 44 mm |
| Type | AMOLED | Retina LTPO OLED |
| Always-on display | ||
| Resolution | 454 x 454 | 368 x 448 |
| Connectivity | ||
| GPS | ||
| NFC | ||
| Wi-Fi | ||
| Cellular | ||
| Bluetooth | 5.0 | 5.3 |
| Processor | ||
| RAM | — | 1 GB |
| Chipset | — | Apple S8 SiP |
Category Scores
Pros & Cons
Amazfit T-Rex Ultra
Pros
- Excellent 20-day battery life with always-on display
- Dual-band six-satellite GPS for high accuracy
- Rugged design with 15 military-grade certifications
- Free-diving rated to 45 meters
- Offline maps with route import support
Cons
- No ECG, skin temperature, or NFC payments
- No Wi-Fi or cellular connectivity
- Zepp OS app ecosystem is limited
- Heavier than most smartwatches at 89g
- No third-party app store
Apple Watch SE 2 (2023)
Pros
- Best value Apple Watch — all core features at a significantly lower price
- Crash Detection and Emergency SOS via satellite
- Lightweight recycled aluminum case is comfortable all day
- Compatible with all Apple Watch bands
- Gets latest watchOS features including Siri and Maps
Cons
- No always-on display
- No ECG, SpO2, or skin temperature sensor
- Same battery life as pricier models — still needs daily charging
- S8 chip is not the latest — misses Double Tap gesture
Related Comparisons
Explore more in smartwatches, see all Amazfit products or all Apple products. View full details for the Amazfit T-Rex Ultra or the Apple Watch SE 2 (2023).