Amazfit GTS 4 Mini vs Samsung Galaxy Watch Ultra
The Verdict
Amazfit GTS 4 Mini targets budget-conscious users seeking essential smartwatch features, delivering a lightweight 31.2g aluminum design with 15-day battery life, SpO2 monitoring, and sleep tracking via Zepp OS 2.0. Samsung Galaxy Watch Ultra caters to premium users demanding flagship capabilities, featuring titanium construction, advanced health metrics including ECG and skin temperature, superior 480x480 AMOLED display with 3000-nit brightness, and comprehensive connectivity options like NFC, WiFi, and cellular. Battery reaches 60 hours in power-saving mode despite larger capacity demands. GTS 4 Mini excels at value and simplicity, while Ultra offers professional-grade health tracking and ecosystem integration. For casual fitness enthusiasts on limited budgets, the Amazfit delivers exceptional performance per dollar. Users prioritizing comprehensive health analytics and premium durability should choose the Galaxy Watch Ultra.
Who Should Buy
Buy the Amazfit GTS 4 Mini if…
- →15-day battery life is exceptional for an AMOLED smartwatch
- →Very affordable at just $99 with solid fitness features
- →Lightweight at 31.2 g — comfortable for 24/7 wear and sleep tracking
Buy the Samsung Galaxy Watch Ultra if…
- →Premium titanium build with 10ATM water resistance and MIL-STD durability
- →Bright 3000-nit Super AMOLED display with sapphire crystal protection
- →Dual-frequency GPS (L1 + L5) for precise outdoor tracking
Category Scores
Pros & Cons
Amazfit GTS 4 Mini
Pros
- 15-day battery life is exceptional for an AMOLED smartwatch
- Very affordable at just $99 with solid fitness features
- Lightweight at 31.2 g — comfortable for 24/7 wear and sleep tracking
- Built-in GPS for outdoor activity tracking
- 120+ sport modes cover nearly every activity
Cons
- No NFC for contactless payments
- Limited smart features — no app store for third-party apps
- No Wi-Fi for faster syncing or standalone functionality
- Zepp OS has fewer integrations than Wear OS or watchOS
- Small display may be hard to read for some users
Samsung Galaxy Watch Ultra
Pros
- Premium titanium build with 10ATM water resistance and MIL-STD durability
- Bright 3000-nit Super AMOLED display with sapphire crystal protection
- Dual-frequency GPS (L1 + L5) for precise outdoor tracking
- Big 590 mAh battery delivers up to 100 hours in Power Saving mode
- Customizable Quick Button for fast access to workouts and apps
Cons
- Very expensive at $649 — Samsung's priciest watch yet
- Only one 47mm size, too large for smaller wrists
- BioActive sensor and BP/ECG features require Samsung phone
- Design closely mimics Apple Watch Ultra
- Limited third-party app ecosystem versus Apple Watch
Full Specifications
| Spec | Amazfit GTS 4 Mini | Samsung Galaxy Watch Ultra |
|---|---|---|
| Software | Zepp OS 2.0 | Wear OS 5 with One UI Watch 6 |
| Body | ||
| Weight | 31.2 g (without strap) | 60.5 g |
| Case material | Aluminum alloy | Titanium Grade 4 |
| Water resistance | 5ATM | 10ATM + IP68 + MIL-STD-810H |
| Health & Sensors | ||
| ECG | ||
| SpO₂ | ||
| Skin temperature | ||
| Heart rate | ||
| Sleep tracking | ||
| Battery | ||
| Battery life | Up to 15 days (typical use) | Up to 60 hours in Power Saving mode (590 mAh) |
| Display | ||
| Size | 42mm | 47mm (1.5") |
| Type | AMOLED Always-On | Super AMOLED with Sapphire Crystal glass, up to 3000 nits |
| Always-on display | ||
| Resolution | 336 x 384 | 480 x 480 |
| Processor | ||
| Chipset | Huami custom SoC | Samsung Exynos W1000 (3nm, 5-core) |
| RAM | — | 2 GB |
| Connectivity | ||
| GPS | ||
| NFC | ||
| Wi-Fi | ||
| Cellular | ||
| Bluetooth | 5.2 | 5.3 |
Related Comparisons
This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
Explore more in smartwatches, see all Amazfit products or all Samsung products. View full details for the Amazfit GTS 4 Mini or the Samsung Galaxy Watch Ultra.