Apple Watch Series 9 vs Amazfit T-Rex 3 Pro
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Apple Watch Series 8 Price range: KSh 50,000.00 through KSh 53,000.00
Apple Watch SE 2 Price range: KSh 28,500.00 through KSh 32,000.00
Apple Watch UltraKSh 90,000.00
Apple Watch Ultra 2KSh 103,500.00
At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Apple Watch Series 9 |  Amazfit T-Rex 3 Pro |
|---|---|---|
| Price | Price range: KSh 45,000.00 through KSh 49,500.00 | Price range: KSh 55,000.00 through KSh 65,000.00 |
| Display | Always-On Retina LTPO OLED | AMOLED 48 mm: 1.5-inch 44 mm: 1.32-inch |
| Battery capacity | — | 48 mm: 700 mAh rated 44 mm: 500 mAh rated |
| Water resistance | Water resistant to 50 m under ISO 22810:2010 | 10 ATM |
| Processor | Apple S9 SiP | — |
| Storage | 64 GB | — |
| Operating system | watchOS | Zepp OS 5 |
| Network / cellular | GPS + Cellular models support LTE and UMTS; availability varies by carrier and region | — |
| Positioning / GNSS | L1 GPS, GLONASS, Galileo, QZSS and BeiDou | Built-in six-satellite positioning with circularly polarized GPS antenna |
| Health & wellness features | ECG app; blood oxygen feature where available; high and low heart-rate notifications; irregular rhythm notifications; temperature sensing; cycle tracking | Heart rate, blood oxygen, stress, HRV, readiness and temperature insights; wellness measurements are not intended for medical diagnosis |
Full specifications
2 of 4 products
| Specification | Apple Watch Series 9 | Amazfit T-Rex 3 Pro |
|---|---|---|
| Identity & design | ||
| Brand | Apple | Amazfit |
| Model | Apple Watch Series 9 | T-Rex 3 Pro |
| Announced | September 2023 | — |
| Dimensions | 45 mm: 45 × 38 × 10.7 mm 41 mm: 41 × 35 × 10.7 mm | 48 mm: 48 × 48 × 14 mm 44 mm: 44.8 × 44.8 × 13.2 mm Heart-rate sensor base excluded |
| Weight | 45 mm: 38.7–51.5 g, depending on case and connectivity 41 mm: 31.9–42.3 g, depending on case and connectivity | 48 mm: 52 g 44 mm: 46.8 g Without strap |
| Build materials | Aluminium or stainless-steel case, depending on configuration | Fiber-reinforced polymer case with Grade 5 titanium bezel and buttons; sapphire-glass touchscreen |
| Wrist size | 45 mm: 140–245 mm wrist 41 mm: 130–200 mm wrist | 48 mm: 145–210 mm 44 mm: 140–205 mm |
| Strap / band | — | Silicone quick-release strap 48 mm: 22 mm 44 mm: 20 mm |
| Controls / buttons | Digital Crown with haptic feedback; side button; touchscreen; Double Tap gesture | Four physical buttons and touchscreen |
| Display | ||
| Display | Always-On Retina LTPO OLED | AMOLED 48 mm: 1.5-inch 44 mm: 1.32-inch |
| Screen resolution | 45 mm: 396 × 484 pixels 41 mm: 352 × 430 pixels | 48 mm: 480 × 480 pixels, 322 ppi 44 mm: 466 × 466 pixels, 353 ppi |
| Display protection | Ion-X front glass on aluminium models; sapphire front crystal on stainless-steel models | Sapphire glass |
| Display features | Always-On display; up to 2,000 nits; 1 nit minimum brightness; 326 ppi | Up to 3,000 nits peak brightness; always-on display |
| Performance & software | ||
| Processor | Apple S9 SiP | — |
| CPU | 64-bit dual-core processor; 4-core Neural Engine | — |
| Storage | 64 GB | — |
| Operating system | watchOS | Zepp OS 5 |
| Connectivity | ||
| Network / cellular | GPS + Cellular models support LTE and UMTS; availability varies by carrier and region | — |
| SIM / eSIM | eSIM on GPS + Cellular models; carrier plan required | — |
| Wi-Fi | 802.11b/g/n, 2.4 GHz and 5 GHz | 2.4 GHz Wi-Fi |
| Bluetooth | Bluetooth 5.3 | Bluetooth 5.2 BLE |
| NFC | NFC with Apple Pay support | — |
| Positioning / GNSS | L1 GPS, GLONASS, Galileo, QZSS and BeiDou | Built-in six-satellite positioning with circularly polarized GPS antenna |
| Ultra Wideband (UWB) | Second-generation Ultra Wideband chip | — |
| Audio & communication | ||
| Speaker | Speaker | Built-in speaker |
| Microphone | Microphone | Built-in microphone |
| Calling | Bluetooth calling through a paired iPhone; cellular calling on GPS + Cellular models with an eligible plan | Bluetooth calling when paired with a compatible phone |
| Sensors, health & fitness | ||
| Sensors | Electrical heart sensor; third-generation optical heart sensor; temperature sensor; compass; always-on altimeter; high-g accelerometer; high-dynamic-range gyroscope; ambient light sensor | BioTracker 6.0 PPG biometric sensor (5PD + 2LED), accelerometer, gyroscope, geomagnetic sensor, barometric altimeter, ambient-light sensor and temperature sensor |
| Health & wellness features | ECG app; blood oxygen feature where available; high and low heart-rate notifications; irregular rhythm notifications; temperature sensing; cycle tracking | Heart rate, blood oxygen, stress, HRV, readiness and temperature insights; wellness measurements are not intended for medical diagnosis |
| Sleep tracking | Sleep app with sleep stages | Sleep stages, naps, sleep score, breathing quality and recovery insights |
| Sports / workout modes | Workout app with multiple workout types and automatic workout detection | 187 sports modes with smart recognition for strength-training and sports movements |
| Training & outdoor features | Pace and heart-rate zones; compass waypoints and backtrack | Offline base, contour and ski maps; turn-by-turn navigation, POI search, route planning, round-trip routing, auto-rerouting, Zepp Coach and PeakBeats training metrics |
| Safety & emergency features | Emergency SOS; international emergency calling; fall detection; crash detection | SOS tools and downloadable maps; requires appropriate setup and phone connectivity for supported communications |
| Diving / depth features | — | Freediving and scuba modes rated to 45 m; follow the manufacturer’s diving limits and safety guidance |
| Battery & durability | ||
| Battery capacity | — | 48 mm: 700 mAh rated 44 mm: 500 mAh rated |
| Battery life | Up to 18 hours normal use; up to 36 hours in Low Power Mode | 48 mm: up to 25 days typical, 10 days heavy, 38 hours accurate GPS 44 mm: up to 17 days typical, 8 days heavy, 26 hours accurate GPS |
| Charging | USB-C magnetic fast-charging cable | Magnetic charging base |
| Water resistance | Water resistant to 50 m under ISO 22810:2010 | 10 ATM |
| Durability / certifications | IP6X dust resistant | Rugged outdoor construction with Grade 5 titanium controls and sapphire glass |
| Compatibility | ||
| Phone compatibility | Requires iPhone XS or later with iOS 17 or later | Android 7.0 or later; iOS 15.0 or later |
| Companion app | Apple Watch app and Apple Health | Zepp app |
| Colors | Aluminium: Pink, Midnight, Starlight, Silver, (PRODUCT)RED Stainless steel: Gold, Silver, Graphite | Black Gold (44mm), Black Gold (48mm); Gold/Grey, Tactical Black |
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