Apple Watch Series 9 vs Apple Watch SE 3
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Amazfit T-Rex 3 Pro Price range: KSh 55,000.00 through KSh 65,000.00
Apple Watch Series 11 Price range: KSh 47,000.00 through KSh 51,500.00
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
At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Apple Watch Series 9 |  Apple Watch SE 3 |
|---|---|---|
| Price | Price range: KSh 45,000.00 through KSh 49,500.00 | Price range: KSh 35,500.00 through KSh 39,500.00 |
| Display | Always-On Retina LTPO OLED | Always-On Retina LTPO OLED 44 mm: 977 mm² display area 40 mm: 759 mm² display area |
| Water resistance | Water resistant to 50 m under ISO 22810:2010 | Water resistant to 50 m under ISO 22810:2010 |
| Processor | Apple S9 SiP | Apple S10 SiP |
| Storage | 64 GB | 64 GB |
| Operating system | watchOS | watchOS |
| Network / cellular | GPS + Cellular models support LTE and UMTS; availability varies by carrier and region | GPS + Cellular models support LTE and UMTS; availability varies by carrier and region |
| Positioning / GNSS | L1 GPS, GLONASS, Galileo, QZSS and BeiDou | L1 GPS, GLONASS, Galileo and QZSS |
| Health & wellness features | ECG app; blood oxygen feature where available; high and low heart-rate notifications; irregular rhythm notifications; temperature sensing; cycle tracking | High and low heart-rate notifications; irregular rhythm notifications; temperature sensing; cycle tracking; mindfulness and medications apps |
Full specifications
2 of 4 products
| Specification | Apple Watch Series 9 | Apple Watch SE 3 |
|---|---|---|
| Identity & design | ||
| Brand | Apple | Apple |
| Model | Apple Watch Series 9 | Apple Watch SE 3 |
| Announced | September 2023 | September 2025 |
| Dimensions | 45 mm: 45 × 38 × 10.7 mm 41 mm: 41 × 35 × 10.7 mm | 44 mm: 44 × 38 × 10.7 mm 40 mm: 40 × 34 × 10.7 mm |
| 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 | 44 mm: 32.9 g (GPS), 33.0 g (GPS + Cellular) 40 mm: 26.3 g (GPS), 26.4 g (GPS + Cellular) |
| Build materials | Aluminium or stainless-steel case, depending on configuration | Aluminium case |
| Wrist size | 45 mm: 140–245 mm wrist 41 mm: 130–200 mm wrist | 44 mm: 140–245 mm wrist 40 mm: 130–200 mm wrist |
| Controls / buttons | Digital Crown with haptic feedback; side button; touchscreen; Double Tap gesture | Digital Crown with haptic feedback; side button; touchscreen |
| Display | ||
| Display | Always-On Retina LTPO OLED | Always-On Retina LTPO OLED 44 mm: 977 mm² display area 40 mm: 759 mm² display area |
| Screen resolution | 45 mm: 396 × 484 pixels 41 mm: 352 × 430 pixels | 44 mm: 368 × 448 pixels 40 mm: 324 × 394 pixels |
| Display protection | Ion-X front glass on aluminium models; sapphire front crystal on stainless-steel models | Ion-X front glass |
| Display features | Always-On display; up to 2,000 nits; 1 nit minimum brightness; 326 ppi | Always-On display; up to 1,000 nits; 326 ppi |
| Performance & software | ||
| Processor | Apple S9 SiP | Apple S10 SiP |
| CPU | 64-bit dual-core processor; 4-core Neural Engine | 64-bit dual-core processor; 4-core Neural Engine |
| Storage | 64 GB | 64 GB |
| Operating system | watchOS | watchOS |
| Connectivity | ||
| Network / cellular | GPS + Cellular models support LTE and UMTS; availability varies by carrier and region | GPS + Cellular models support LTE and UMTS; availability varies by carrier and region |
| SIM / eSIM | eSIM on GPS + Cellular models; carrier plan required | eSIM on GPS + Cellular models; carrier plan required |
| Wi-Fi | 802.11b/g/n, 2.4 GHz and 5 GHz | Wi‑Fi 4 (802.11n), 2.4 GHz |
| Bluetooth | Bluetooth 5.3 | Bluetooth 5.3 |
| NFC | NFC with Apple Pay support | NFC with Apple Pay support |
| Positioning / GNSS | L1 GPS, GLONASS, Galileo, QZSS and BeiDou | L1 GPS, GLONASS, Galileo and QZSS |
| Ultra Wideband (UWB) | Second-generation Ultra Wideband chip | — |
| Audio & communication | ||
| Speaker | Speaker | Speaker |
| Microphone | Microphone | Microphone |
| Calling | Bluetooth calling through a paired iPhone; cellular calling on GPS + Cellular models with an eligible plan | Bluetooth calling through a paired iPhone; cellular calling on GPS + Cellular models with an eligible plan |
| 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 | Second-generation optical heart sensor; temperature sensor; compass; always-on altimeter; high-g accelerometer; high-dynamic-range gyroscope; ambient light sensor |
| Health & wellness features | ECG app; blood oxygen feature where available; high and low heart-rate notifications; irregular rhythm notifications; temperature sensing; cycle tracking | High and low heart-rate notifications; irregular rhythm notifications; temperature sensing; cycle tracking; mindfulness and medications apps |
| Sleep tracking | Sleep app with sleep stages | Sleep tracking with sleep stages and sleep score |
| Sports / workout modes | Workout app with multiple workout types and automatic workout detection | Workout app with multiple workout types and automatic workout detection |
| Training & outdoor features | Pace and heart-rate zones; compass waypoints and backtrack | Pace and heart-rate zones; compass waypoints and backtrack |
| Safety & emergency features | Emergency SOS; international emergency calling; fall detection; crash detection | Emergency SOS; international emergency calling; fall detection; crash detection; check in |
| Battery & durability | ||
| Battery life | Up to 18 hours normal use; up to 36 hours in Low Power Mode | Up to 18 hours normal use; up to 32 hours in Low Power Mode |
| Charging | USB-C magnetic fast-charging cable | Fast charging |
| Water resistance | Water resistant to 50 m under ISO 22810:2010 | Water resistant to 50 m under ISO 22810:2010 |
| Durability / certifications | IP6X dust resistant | — |
| Compatibility | ||
| Phone compatibility | Requires iPhone XS or later with iOS 17 or later | Requires iPhone 11 or later with iOS 26 or later |
| Companion app | Apple Watch app and Apple Health | Apple Watch app and Apple Health |
| Colors | Aluminium: Pink, Midnight, Starlight, Silver, (PRODUCT)RED Stainless steel: Gold, Silver, Graphite | Starlight; Midnight |
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