Samsung Galaxy Watch Ultra 2025 vs Apple Watch Series 12 42mm
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Apple Watch UltraKSh 90,000.00
Google Pixel Watch 4
OnePlus Watch 4KSh 38,000.00
Samsung Galaxy Watch UltraKSh 45,000.00
Quick comparison
At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Samsung Galaxy Watch Ultra 2025 |  Apple Watch Series 12 42mm |
|---|---|---|
| Price | KSh 43,500.00 | KSh 50,000.00 |
| Display | 1.5-inch Super AMOLED | Always-On Retina LTPO3 wide-angle OLED |
| Battery capacity | 590 mAh | — |
| Water resistance | 10 ATM | 50 m swimproof under ISO 22810:2010 |
| Processor | Exynos W1000 (3 nm) | Apple S11 chip; 4-core Neural Engine |
| RAM | 2 GB | — |
| Storage | 64 GB | 64 GB |
| Operating system | Wear OS Powered by Samsung; One UI 8 Watch | watchOS 27 |
| Network / cellular | 3G UMTS and 4G LTE; availability varies by carrier and region | 5G RedCap and LTE on GPS + Cellular models; international roaming supported |
| Positioning / GNSS | Built-in dual-frequency L1 + L5 GPS; GPS, GLONASS, BeiDou and Galileo | Precision L1 GPS; GLONASS; Galileo; QZSS; BeiDou |
| Health & wellness features | Heart-rate monitoring, ECG, blood pressure, body composition, blood oxygen, skin temperature, Energy Score, Antioxidant Index and Vascular Load; availability varies by market and paired phone | Heart rate and HRV; Blood Oxygen; ECG; respiratory rate; wrist temperature; Readiness and Vitals; high/low heart-rate and irregular-rhythm notifications; cycle tracking; hypertension notifications |
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Full specifications
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Identity & design
| Specification | Samsung Galaxy Watch Ultra 2025 | Apple Watch Series 12 42mm |
|---|---|---|
| Brand | Samsung | Apple |
| Model | Galaxy Watch Ultra (2025) | Apple Watch Series 12 42mm |
| Announced | July 2025 | 9 September 2026 |
| Dimensions | 47.4 × 47.1 × 12.1 mm | Aluminum or titanium: 42 × 37 × 9.7 mm; ceramic: 43 × 37 × 9.85 mm |
| Weight | 60.5 g | Aluminum GPS: 32.2 g; aluminum GPS + Cellular: 31.5 g; titanium: 36.5 g; Pearl White ceramic: 41.7 g; Night Blue ceramic: 42.8 g |
| Build materials | Grade 4 titanium case; sapphire-crystal display | Aluminum, titanium or ceramic case, depending on configuration |
| Wrist size | — | 130–200 mm |
| Controls / buttons | Touchscreen; Quick button; Home and Back buttons; Double Pinch gesture | Digital Crown with haptic feedback; side button; band-release button; single tap, double tap and wrist flick gestures |
Display
| Specification | Samsung Galaxy Watch Ultra 2025 | Apple Watch Series 12 42mm |
|---|---|---|
| Display | 1.5-inch Super AMOLED | Always-On Retina LTPO3 wide-angle OLED |
| Screen resolution | 480 × 480 pixels | 374 × 446 pixels, 326 ppi; 970 mm² display area |
| Display protection | Sapphire crystal | Ceramic Shield 2 on aluminum cases; sapphire front crystal on titanium and ceramic cases |
| Display features | Full-colour Always-On Display; up to 3,000 nits | 1 Hz refresh; up to 2,000 nits peak brightness; 1 nit minimum brightness |
Performance & software
| Specification | Samsung Galaxy Watch Ultra 2025 | Apple Watch Series 12 42mm |
|---|---|---|
| Processor | Exynos W1000 (3 nm) | Apple S11 chip; 4-core Neural Engine |
| CPU | 5-core CPU up to 1.6 GHz | 64-bit dual-core |
| GPU | — | PowerVR |
| RAM | 2 GB | — |
| Storage | 64 GB | 64 GB |
| Operating system | Wear OS Powered by Samsung; One UI 8 Watch | watchOS 27 |
Connectivity
| Specification | Samsung Galaxy Watch Ultra 2025 | Apple Watch Series 12 42mm |
|---|---|---|
| Network / cellular | 3G UMTS and 4G LTE; availability varies by carrier and region | 5G RedCap and LTE on GPS + Cellular models; international roaming supported |
| SIM / eSIM | eSIM | eSIM on GPS + Cellular models |
| Wi-Fi | 802.11a/b/g/n, 2.4 GHz and 5 GHz | Wi‑Fi 4 (802.11n), 2.4 GHz and 5 GHz |
| Bluetooth | Bluetooth 5.3 | Bluetooth 5.3 |
| NFC | Supported | Supported; Apple Pay |
| Positioning / GNSS | Built-in dual-frequency L1 + L5 GPS; GPS, GLONASS, BeiDou and Galileo | Precision L1 GPS; GLONASS; Galileo; QZSS; BeiDou |
| Ultra Wideband (UWB) | — | Second-generation Ultra Wideband chip |
Audio & communication
| Specification | Samsung Galaxy Watch Ultra 2025 | Apple Watch Series 12 42mm |
|---|---|---|
| Speaker | Speaker and siren | Speaker with media playback |
| Microphone | Microphone | Microphone with Voice Isolation |
| Calling | Standalone LTE calling and Bluetooth calling; carrier support required | Bluetooth calling; cellular calling on GPS + Cellular models; international emergency calling |
Sensors, health & fitness
| Specification | Samsung Galaxy Watch Ultra 2025 | Apple Watch Series 12 42mm |
|---|---|---|
| Sensors | Samsung BioActive Sensor (optical heart-rate, electrical heart and bioelectrical impedance analysis), infrared temperature sensor, accelerometer, barometer, gyroscope, geomagnetic sensor and light sensor | High-g accelerometer; high dynamic-range gyroscope; compass; always-on altimeter; ambient-light sensor; third-generation electrical heart sensor; always-on optical heart sensor; blood-oxygen sensor; temperature sensor; depth gauge; water-temperature sensor |
| Health & wellness features | Heart-rate monitoring, ECG, blood pressure, body composition, blood oxygen, skin temperature, Energy Score, Antioxidant Index and Vascular Load; availability varies by market and paired phone | Heart rate and HRV; Blood Oxygen; ECG; respiratory rate; wrist temperature; Readiness and Vitals; high/low heart-rate and irregular-rhythm notifications; cycle tracking; hypertension notifications |
| Sleep tracking | Sleep tracking, Bedtime Guidance, sleep coaching and sleep-apnoea features where available | Sleep duration and stages; sleep score; sleep-apnea notifications |
| Sports / workout modes | Multiple workout modes including multisport and automatic workout detection | Running; hiking; cycling; pool and open-water swimming; skiing; snowboarding; rowing; paddling; golf; walking; HIIT; yoga; strength; dance; Pilates; Tai Chi; kickboxing; multisport and more |
| Training & outdoor features | Dual-frequency GPS; GPX routes; Track Back; Running Coach; personalised heart-rate zones; Functional Threshold Power | Custom workouts and views; Training Load; heart-rate zones; VO₂ max; Race Route; Pacer; running dynamics; automatic track detection; offline maps, routes, waypoints and Backtrack |
| Safety & emergency features | Fall detection, SOS and siren features when configured | Emergency SOS; international emergency calling; Fall Detection; Crash Detection; flashlight; Check In; noise monitoring; emergency waypoints |
| Diving / depth features | — | Depth gauge to 6 m; water-temperature sensor |
Battery & durability
| Specification | Samsung Galaxy Watch Ultra 2025 | Apple Watch Series 12 42mm |
|---|---|---|
| Battery capacity | 590 mAh | — |
| Battery life | Up to 80 hours with Always-On Display off; up to 60 hours with Always-On Display on; up to 100 hours in Power Saving Mode | Up to 24 hours normal use; up to 38 hours Low Power Mode; up to 10 hours outdoor workout |
| Charging | WPC-based wireless charging | Fast-charge capable; up to 80% in about 30 minutes; 15 minutes for up to 12 hours normal use; 5 minutes for up to 10 hours sleep tracking |
| Water resistance | 10 ATM | 50 m swimproof under ISO 22810:2010 |
| Durability / certifications | IP68; MIL-STD-810H | IP6X dust resistance |
Compatibility
| Specification | Samsung Galaxy Watch Ultra 2025 | Apple Watch Series 12 42mm |
|---|---|---|
| Phone compatibility | Android 12 or later with more than 1.5 GB RAM and Google Mobile Services; compatibility varies by market and device | iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 27 or later |
| Companion app | Galaxy Wearable and Samsung Health | — |
| Colors | Titanium Blue; Titanium Gray; Titanium White; Titanium Silver | Aluminum: Dark Bronze, Light Gold, Black, Space Gray; titanium: Radiant Gold, Natural; ceramic: Pearl White, Night Blue |
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