| Feature | Apple Watch Series 10 / Ultra 2 | Samsung Galaxy Watch 8 / Ultra (2025) |
| Release Date | Series 10 → Sept 2024 Ultra 2 → Sept 2023 (updated 2024/2025) | Watch 8 Series & Ultra (2025) → July 25, 2025 |
| Design | Series 10: thinner, larger screen, sleek look Ultra 2: rugged titanium build | Watch 8: slim, lighter, sapphire-crystal AMOLED Classic: rotating bezel Ultra: titanium blue, rugged |
| Display | Series 10: 30% larger, 40% brighter at angles, always-on refresh Ultra 2: 3,000 nits brightness | Watch 8: Super AMOLED, sapphire crystal Ultra (2025): larger & rugged |
| Performance | Fast charging (80% in ~30 mins) Improved chip efficiency | New Exynos W1000, smoother UI Wear OS 6 (One UI 8) |
| Health Features | Sleep apnea detection Depth & water temp sensors Blood-oxygen (analyzed on iPhone) | Vascular Load & Antioxidant Index sensors Heart rate, ECG, SpO₂, sleep tracking |
| Battery Life | Series 10: ~18–24 hrs Ultra 2: up to 36 hrs (60 hrs in power saver) | Watch 8: ~24–30 hrs Ultra (2025): longer endurance |
Apple vs Samsung Latest Smartwatches (2025)
