vs
7.9Display9.6
5.2Battery life3.2
8.6Health tracking8.2
8.0Sports & outdoor3.1
7.4Smart features7.9
9.3Build & durability7.2
Dimensions
Size comparison
Galaxy Watch Ultra 2025Galaxy Watch8
| Galaxy Watch Ultra 2025 | Galaxy Watch8 | Difference | |
|---|---|---|---|
| Height | 47.4 mm | 46 mm | +1.4 mm |
| Width | 47.1 mm | 43.7 mm | +3.4 mm |
| Thickness | 12.1 mm | 8.6 mm | +3.5 mm |
| Weight | 61 g | 34 g | +27 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Galaxy Watch Ultra 2025 better than Galaxy Watch8?
- Battery life (smartwatch mode)2.5 days vs 1.2 days2.1×
- Water resistance10 ATM vs 5 ATM2×
- Battery life (hours)60 h vs 30 h2×
- Storage64 GB vs 32 GB2×
- Screen size1.5″ vs 1.47″+2%
- Battery capacity590 mAh vs 435 mAh+36%
Why is Galaxy Watch8 better than Galaxy Watch Ultra 2025?
- Weight61 g vs 34 g+79%
- Wi-FiWi-Fi 1 vs Wi-Fi 44×
- Thickness12.1 mm vs 8.6 mm+41%
Specifications
Side by side
| Design & durability | ||
| Case size | 47 mm | 46 mm |
| Weight | 61 g | 34 g |
| Thickness | 12.1 mm | 8.6 mm |
| Height | 47.4 mm | 46 mm |
| Width | 47.1 mm | 43.7 mm |
| Case material | Titanium | Aluminium |
| Sapphire crystal | Yes | Yes |
| Lens / cover glass | Saphirglas Saphirglas | Sapphire crystal |
| Strap material | Silikon | — |
| Water resistance | 10 ATM | 5 ATM |
| Ingress protection | IP68 | IP68 |
| Water resistance (IPx) | IPx8 | IPx8 |
| Water rating (maker) | 100 m / 10 bar / 10 ATM | 50 m / 5 bar / 5 ATM |
| Military-grade (MIL-STD-810) | Yes | Yes |
| Colours | — | Graphite, Silver |
| Display | ||
| Screen size | 1.5″ | 1.47″ |
| Display technology | AMOLED | AMOLED |
| Panel | Super AMOLED | Super AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Resolution (width) | 480 px | 480 px |
| Resolution (height) | 480 px | 480 px |
| Pixel density | — | 327 ppi |
| Peak brightness | — | 3,000 nits |
| Refresh rate | — | 60 Hz |
| Battery | ||
| Battery life (smartwatch mode) | 2.5 days | 1.2 days |
| Battery life (hours) | 60 h | 30 h |
| Battery capacity | 590 mAh | 435 mAh |
| Battery type | Li-Po | Li-Ion |
| Wireless charging | Yes | Yes |
| Charging | kabellos, magnetisches Ladekabel, magnetische Ladeschale | kabellos, magnetisches Ladekabel, magnetische Ladeschale |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | Yes | Yes |
| Skin temperature | Yes | Yes |
| Temperature sensor | — | Yes |
| HRV tracking | Yes | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | heart rate, SpO2, barometer, accelerometer, ambient light | Accelerometer, gyro, heart rate, barometer, altimeter, compass, SpO2, temperature (skin), BioActive, antioxidant index |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | — | Yes |
| Satellite systems | GPS, GLONASS, GALILEO, BDS | GLONASS, GALILEO, BDS |
| Barometric altimeter | Yes | Yes |
| Compass | — | Yes |
| Multisport / triathlon mode | Yes | Yes |
| Connectivity | ||
| NFC payments | Yes | Yes |
| LTE (cellular) | Yes | Yes |
| eSIM | — | Yes |
| Wi-Fi | Wi-Fi 1 | Wi-Fi 4 |
| Bluetooth | 5.3 | 5.3 |
| Smart features | ||
| Calls from the wrist | — | Yes |
| Speaker | — | Yes |
| Voice assistant | Yes | Yes |
| Music on the watch | Yes | Yes |
| Storage | 64 GB | 32 GB |
| RAM | 2 GB | 2 GB |
| Platform | ||
| Operating system | wear OS 6, One UI 8 | Android Wear OS 6 |
| Platform | Wear OS | Android |
| Works with | Android | Android |
| Chipset | Exynos W1000 | Exynos W1000 |
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