| Case Size | 42mm / 46mm, aluminium (jet black, rose gold, silver, space gray) or polished titanium (natural, gold, slate) | — |
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| Display | Ion-X glass on aluminium models (2x more scratch resistant), sapphire crystal on titanium models | 1.3" (43mm) 432x432 / 1.5" (47mm) 480x480 Super AMOLED, sapphire crystal, Always On Display, 2,000 nits peak |
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| Battery | Up to 24 hours; 15 minutes of fast charging adds up to 8 hours | Up to 40 hours (Always On Display off) / up to 30 hours (on); 300 mAh (43mm) / 425 mAh (47mm) |
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| Health Sensors | Optical heart sensor with hypertension notifications, sleep score, ECG, blood oxygen, sleep apnea notifications, wrist temperature | — |
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| Connectivity | 5G cellular models with redesigned antenna | Bluetooth 5.3, Wi-Fi 2.4+5GHz, NFC, GPS/GLONASS/BeiDou/Galileo, optional LTE |
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| OS | watchOS 26 (requires iPhone 11 or later with iOS 26) | Wear OS 4 (Wear OS Powered by Samsung), One UI 5 Watch |
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| Case | — | 43mm: 42.5 x 42.5 x 10.9 mm, 52.0 g / 47mm: 46.5 x 46.5 x 10.9 mm, 59.0 g, rotating bezel |
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| Chipset | — | Exynos W930 dual-core 1.4GHz |
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| Memory | — | 2GB RAM + 16GB storage |
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| Water Resistance | — | 5ATM + IP68, MIL-STD-810H |
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| Sensors | — | Samsung BioActive Sensor (optical heart rate, electrical heart signal, bioelectrical impedance), temperature, accelerometer, barometer, gyro, geomagnetic, light, 3D Hall sensor |
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| Compatibility | — | Android 10 or higher with more than 1.5GB of memory |
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| Features | — | Sleep coaching, body composition, ECG and blood pressure (select markets, Samsung phone), irregular heart rhythm notification, skin temperature, fall detection, Samsung Wallet |
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