| Case | Titanium, shock-resistant; 47 mm (47.4 x 47.1 x 10.7 mm, 61.5 g); Titanium Silver / Titanium Gray | — |
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| Display | 1.52-inch (38.5 mm) Super AMOLED, 498x498, sapphire crystal, full-color Always On Display, up to 5,000 nits (localized peak) | Flat crystal, up to 3000 nits |
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| Chipset | Qualcomm Snapdragon Wear Elite (SDW6100, penta-core, 3nm) | Apple S9 SiP, 2nd-gen Ultra Wideband |
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| RAM | 2GB | — |
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| Storage | 64GB | — |
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| Battery | 800 mAh typical capacity (Samsung: 35% more than previous Ultra); no runtime figure published at launch; high-frequency fast wireless charging (WPC-based) | Up to 36 hours; up to about 60 hours in low-power mode |
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| Water Resistance | 10ATM+ / IP69K / MIL-STD-810H / EN13319 dive instrument certification; 100 m (ISO 22810) | WR100 / EN13319, recreational dives to 40 m |
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| Sensors | Samsung BioActive Sensor (optical heart rate, ECG, BIA), temperature, accelerometer, barometer, gyro, geomagnetic, light | — |
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| Connectivity | LTE, Bluetooth 6.0, Wi-Fi 2.4/5 GHz, NFC, L1+L5 dual-frequency GPS | Cellular, dual-frequency GPS (L1 + L5) |
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| Health Features | Sleep Apnea, Vitals, Heart Health Score, Daily Cardio Load, Fitness Index, Hearing; Trail Run and Nutrition Alert hydration guidance | — |
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| OS | Wear OS 7 (One UI 9 Watch); requires Android 13+ phone with Google Mobile Services | watchOS 10 (at launch) |
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| Case Size | — | 49mm titanium |
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| Health Sensors | — | Heart rate, water temperature, sleep apnea detection, blood oxygen (calculated on paired iPhone) |
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