Amazfit GTR 4 vs Fitbit Sense
The Verdict
Amazfit GTR 4 and Fitbit Sense serve different priorities in the smartwatch space. Amazfit GTR 4 excels with its 14-day battery life, larger 46mm AMOLED display at 466x466 resolution, and Zepp OS 2.0 offering excellent performance for fitness tracking. It includes heart rate and SpO2 monitoring plus sleep tracking at $199. Fitbit Sense steps up with more comprehensive health features: ECG capability, skin temperature monitoring, and NFC for contactless payments. Its 40mm display is smaller with lower 336x336 resolution, and battery lasts only 6+ days. Fitbit's ecosystem integrates deeper with Google services and provides more detailed health analytics through its companion app. Weight differs minimally (52g vs 45.9g). Both achieve 5ATM water resistance and include GPS. Choose Amazfit GTR 4 if battery longevity and larger display matter most, especially for outdoor activities and frequent travelers. Select Fitbit Sense if advanced health diagnostics (ECG, skin temp) and seamless Google ecosystem integration justify the $100 premium and shorter charging cycles. GTR 4 offers superior practical value; Sense provides clinical health features.
Who Should Buy
Buy the Amazfit GTR 4 if…
- →Large 1.43" AMOLED display is sharp and vivid with always-on option
- →Dual-band GPS rivals Garmin for outdoor tracking accuracy
- →14-day battery is outstanding for an AMOLED smartwatch
Buy the Fitbit Sense if…
- →Most comprehensive health sensor suite at launch — EDA, ECG, SpO2, skin temp
- →6+ day battery outlasts Apple Watch and Samsung Galaxy Watch
- →Built-in GPS for phone-free outdoor workouts
Category Scores
Pros & Cons
Amazfit GTR 4
Pros
- Large 1.43" AMOLED display is sharp and vivid with always-on option
- Dual-band GPS rivals Garmin for outdoor tracking accuracy
- 14-day battery is outstanding for an AMOLED smartwatch
- Built-in speaker and microphone for Bluetooth phone calls
- 150+ sport modes with auto-detection for common activities
Cons
- Zepp OS app ecosystem is extremely limited
- No NFC for contactless payments in most regions
- Cannot reply to notifications — view and dismiss only
- Build quality and software polish trail Apple and Samsung
Fitbit Sense
Pros
- Most comprehensive health sensor suite at launch — EDA, ECG, SpO2, skin temp
- 6+ day battery outlasts Apple Watch and Samsung Galaxy Watch
- Built-in GPS for phone-free outdoor workouts
- Stress management score with EDA sensor is unique
- NFC for Fitbit Pay contactless payments
Cons
- Fitbit OS app ecosystem is very limited compared to watchOS/Wear OS
- Capacitive button is unreliable and frustrating to press
- Many advanced features require Fitbit Premium subscription ($10/mo)
- Google acquisition created uncertainty about Fitbit OS future
Full Specifications
| Spec | Amazfit GTR 4 | Fitbit Sense |
|---|---|---|
| Software | Zepp OS 2.0 | Fitbit OS |
| Body | ||
| Weight | 52 g (without strap) | 45.9 g |
| Case material | Aluminum alloy with stainless steel crown | Aluminum |
| Water resistance | 5ATM | 5ATM |
| Health & Sensors | ||
| ECG | ||
| SpO₂ | ||
| Skin temperature | ||
| Heart rate | ||
| Sleep tracking | ||
| Battery | ||
| Battery life | Up to 14 days (typical usage) | Up to 6+ days |
| Display | ||
| Size | 46mm (1.43 inches) | 40mm (1.58 inches) |
| Type | AMOLED | AMOLED |
| Always-on display | ||
| Resolution | 466 x 466 | 336 x 336 |
| Processor | ||
| Chipset | Huami custom processor | Fitbit custom processor |
| Connectivity | ||
| GPS | ||
| NFC | ||
| Wi-Fi | ||
| Cellular | ||
| Bluetooth | 5.0 | 5.0 |
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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 Fitbit products. View full details for the Amazfit GTR 4 or the Fitbit Sense.