vs
9.2Display8.1
5.0Health tracking9.2
4.7Sports & outdoor4.7
9.0Smart features5.9
3.8Build & durability5.8
Dimensions
Size comparison
Watch UltraWatch 4
| Watch Ultra | Watch 4 | Difference | |
|---|---|---|---|
| Height | 46.3 mm | 47.4 mm | −1.1 mm |
| Width | 46.3 mm | 47.4 mm | −1.1 mm |
| Thickness | 12.1 mm | 11 mm | +1.1 mm |
| Weight | 51 g | 43 g | +8 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Watch Ultra better than Watch 4?
- LTE (cellular)Yes · Watch 4: No
- eSIMYes · Watch 4: No
- Pixel density439 ppi vs 310 ppi+42%
Why is Watch 4 better than Watch Ultra?
- Weight51 g vs 43 g+19%
- Peak brightness2,700 nits vs 3,000 nits+11%
- Battery capacity550 mAh vs 646 mAh+17%
- Thickness12.1 mm vs 11 mm+10%
Specifications
Side by side
| Design & durability | ||
| Case size | 46 mm | 47 mm |
| Weight | 51 g | 43 g |
| Thickness | 12.1 mm | 11 mm |
| Height | 46.3 mm | 47.4 mm |
| Width | 46.3 mm | 47.4 mm |
| Sapphire crystal | — | Yes |
| Lens / cover glass | Corning Gorilla Glass 3 | Sapphire crystal glass |
| Water resistance | 5 ATM | 5 ATM |
| Ingress protection | IP68 | IP68 |
| Water resistance (IPx) | IPx8 | IPx8 |
| Military-grade (MIL-STD-810) | — | Yes |
| Colours | Black, Silver | Midnight Titanium, Evergreen Titanium |
| Display | ||
| Screen size | 1.5″ | 1.5″ |
| Display technology | OLED | AMOLED |
| Panel | LTPO pOLED | LTPO AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Resolution (width) | 466 px | 466 px |
| Resolution (height) | 466 px | 466 px |
| Pixel density | 439 ppi | 310 ppi |
| Peak brightness | 2,700 nits | 3,000 nits |
| LTPO display | Yes | Yes |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery capacity | 550 mAh | 646 mAh |
| Battery type | — | Si/C |
| Wireless charging | — | No |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | — | Yes |
| Skin temperature | — | Yes |
| Temperature sensor | — | Yes |
| Sensors | Accelerometer, gyro, heart rate, compass, barometer, SpO2 | Accelerometer, gyro, barometer, compass, heart rate, SpO2, thermometer (skin temperature) |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | Yes | Yes |
| Satellite systems | — | GLONASS, GALILEO, BDS, QZSS |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Connectivity | ||
| NFC payments | Yes | Yes |
| LTE (cellular) | Yes | No |
| eSIM | Yes | No |
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 5.3 | 5.2 |
| Smart features | ||
| Speaker | Yes | Yes |
| Storage | 32 GB | 32 GB |
| RAM | 2 GB | 2 GB |
| Platform | ||
| Operating system | Android Wear OS 6 | OxygenOS Watch 8 + Wear OS 7.0 |
| Platform | Android | Wear OS |
| Chipset | Qualcomm Snapdragon W5+ Gen 1 | Qualcomm Snapdragon W5 Gen 1 |
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