Amazfit GTS 4 vs Fitbit Sense
The Verdict
Amazfit GTS 4 delivers exceptional value with its lightweight design, superior 8-day battery life, and dual-band GPS for serious fitness tracking,ideal for endurance athletes and budget-conscious users. Fitbit Sense counters with advanced health sensors including ECG and skin temperature monitoring, plus NFC for contactless payments, though its heavier build and shorter 6-day battery are notable trade-offs. Display quality favors the GTS 4's sharper 390x450 AMOLED screen versus Fitbit's 336x336 panel. Software ecosystems differ significantly: Zepp OS emphasizes simplicity and customization, while Fitbit OS integrates deeply with Google Health services. For comprehensive health insights and payment features, Fitbit Sense justifies its premium price; however, the Amazfit GTS 4 offers better everyday usability through superior battery endurance and lower weight, making it the more practical choice for most smartwatch buyers.
Who Should Buy
Buy the Amazfit GTS 4 if…
- →Large 1.75" AMOLED display is bright and vivid for the price
- →Dual-band GPS provides accurate outdoor tracking rivaling Garmin
- →Ultra-lightweight at 27 g — one of the lightest smartwatches available
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 GTS 4
Pros
- Large 1.75" AMOLED display is bright and vivid for the price
- Dual-band GPS provides accurate outdoor tracking rivaling Garmin
- Ultra-lightweight at 27 g — one of the lightest smartwatches available
- 8-day battery comfortably outlasts Apple Watch and Galaxy Watch
- 150+ sport modes cover virtually every activity
Cons
- Zepp OS has a very limited third-party app ecosystem
- No NFC for contactless payments in most markets
- Notification interaction is basic — can't reply to messages
- Build quality feels less premium than Apple or Samsung at this price
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 GTS 4 | Fitbit Sense |
|---|---|---|
| Software | Zepp OS 2.0 | Fitbit OS |
| Body | ||
| Weight | 27 g (without strap) | 45.9 g |
| Case material | Aluminum alloy | Aluminum |
| Water resistance | 5ATM | 5ATM |
| Health & Sensors | ||
| ECG | ||
| SpO₂ | ||
| Skin temperature | ||
| Heart rate | ||
| Sleep tracking | ||
| Battery | ||
| Battery life | Up to 8 days (typical usage) | Up to 6+ days |
| Display | ||
| Size | 42mm (1.75 inches) | 40mm (1.58 inches) |
| Type | AMOLED | AMOLED |
| Always-on display | ||
| Resolution | 390 x 450 | 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 GTS 4 or the Fitbit Sense.