Amazfit GTS 4 vs Amazfit Active 2 Round
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At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Amazfit GTS 4 |  Amazfit Active 2 Round |
|---|---|---|
| Price | KSh 18,500.00 | KSh 16,500.00 |
| Display | 1.75-inch AMOLED | 1.32-inch AMOLED touchscreen |
| Battery capacity | 300 mAh rated | 270 mAh rated |
| Water resistance | 5 ATM | 5 ATM |
| Processor | Not listed | — |
| RAM | Not listed | — |
| Storage | Not listed | — |
| Operating system | Zepp OS 2.0 | — |
| Network / cellular | No cellular connection | — |
| Positioning / GNSS | Dual-band, circularly polarized GNSS supporting six satellite systems | Built-in five-satellite positioning with circularly polarized antenna |
| Health & wellness features | 24-hour heart rate, blood oxygen and stress; one-tap measurement; readings are not medical diagnoses | Heart rate, blood oxygen, stress, readiness, HRV, PAI and temperature insights; wellness measurements are not intended for medical diagnosis |
Full specifications
2 of 4 products
| Specification | Amazfit GTS 4 | Amazfit Active 2 Round |
|---|---|---|
| Identity & design | ||
| Brand | Amazfit | Amazfit |
| Model | GTS 4 | Active 2 (Round) |
| Announced | September 2022 | — |
| Dimensions | 42.7 × 36.5 × 9.9 mm without heart-rate sensor base | 43.9 × 43.9 × 9.9 mm (heart-rate sensor base excluded) |
| Weight | 27 g without strap | 29.5 g without strap |
| Build materials | Aluminum-alloy middle frame; high-gloss sprayed polycarbonate bottom shell | Stainless-steel bezel, polymer middle frame and tempered-glass touchscreen |
| Wrist size | 140–200 mm | 135–195 mm |
| Strap / band | 20 mm quick-release fluoroelastomer or nylon strap | 20 mm quick-release silicone strap with classic pin buckle |
| Controls / buttons | Touchscreen and stainless-steel navigation crown | Two physical buttons and touchscreen |
| Display | ||
| Display | 1.75-inch AMOLED | 1.32-inch AMOLED touchscreen |
| Screen resolution | 390 × 450 pixels, 341 ppi | 466 × 466 pixels, 353 ppi |
| Display protection | Tempered glass with anti-fingerprint coating | Tempered glass with anti-fingerprint coating |
| Display features | Always-on display; 150+ watch faces | Up to 2,000 nits peak brightness; peak brightness is unavailable below 30% battery |
| Performance & software | ||
| Processor | Not listed | — |
| CPU | Not listed | — |
| GPU | Not listed | — |
| RAM | Not listed | — |
| Storage | Not listed | — |
| Operating system | Zepp OS 2.0 | — |
| Connectivity | ||
| Network / cellular | No cellular connection | — |
| SIM / eSIM | No SIM or eSIM | — |
| Wi-Fi | 2.4 GHz Wi‑Fi | — |
| Bluetooth | Bluetooth 5.0 and BLE | Bluetooth 5.2 BLE |
| NFC | NFC not listed | — |
| Positioning / GNSS | Dual-band, circularly polarized GNSS supporting six satellite systems | Built-in five-satellite positioning with circularly polarized antenna |
| Ultra Wideband (UWB) | Not listed | — |
| Satellite features | Not listed | — |
| Audio & communication | ||
| Speaker | Built-in speaker | Built-in speaker |
| Microphone | Built-in microphone | Built-in microphone |
| Calling | Bluetooth calling when paired | Bluetooth calling when paired with a compatible phone |
| Sensors, health & fitness | ||
| Sensors | BioTracker 4.0 PPG, accelerometer, gyroscope, geomagnetic, barometric altimeter and ambient-light sensor | BioTracker 6.0 PPG biometric sensor, accelerometer, gyroscope, geomagnetic sensor, barometric altimeter, ambient-light sensor and temperature sensor |
| Health & wellness features | 24-hour heart rate, blood oxygen and stress; one-tap measurement; readings are not medical diagnoses | Heart rate, blood oxygen, stress, readiness, HRV, PAI and temperature insights; wellness measurements are not intended for medical diagnosis |
| Sleep tracking | Sleep stages including REM, naps, breathing quality and sleep score | Sleep stages, naps, sleep score and HRV-based recovery insights |
| Sports / workout modes | 154 modes; automatic recognition of eight sports and strength exercises | More than 160 sports modes, including HYROX Race |
| Training & outdoor features | Route import, real-time navigation, track-run mode and PeakBeats training status | Zepp Coach, recovery and conditioning insights, five-system positioning and route/navigation tools |
| Safety & emergency features | Not listed | — |
| Diving / depth features | Not rated for diving | — |
| Battery & durability | ||
| Battery capacity | 300 mAh rated | 270 mAh rated |
| Battery life | Up to 8 days typical, 4 days heavy, 16 days saver; GPS up to 16/28/33 hours by mode | Up to 10 days typical use, 19 days battery-saver mode, 5 days heavy use or 21 hours continuous GPS |
| Charging | Magnetic charging, approximately 2 hours | Magnetic charging base; approximately 2 hours |
| Water resistance | 5 ATM | 5 ATM |
| Durability / certifications | ISO 22810:2010 5 ATM; suitable for swimming, not hot showers or sauna | — |
| Compatibility | ||
| Phone compatibility | Android 7.0+ or iOS 12.0+ | Compatible Android and iOS phones supported by the Zepp app |
| Companion app | Zepp app | Zepp app |
| Colors | Infinite Black, Misty White, Autumn Brown, Rosebud Pink | Black case; Red or Black silicone strap |
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