Dimensions
Size comparison
Watch 3Watch 4
| Watch 3 | Watch 4 | Difference | |
|---|---|---|---|
| Height | 47.6 mm | 47.4 mm | +0.2 mm |
| Width | 46.6 mm | 47.4 mm | −0.8 mm |
| Thickness | 11.8 mm | 11 mm | +0.8 mm |
| Weight | 50 g | 43 g | +7 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Watch 3 better than Watch 4?
Watch 3 has no measurable advantages in this pair.
Why is Watch 4 better than Watch 3?
- Peak brightness2,200 nits vs 3,000 nits+36%
- Weight49.7 g vs 43 g+16%
- Thickness11.8 mm vs 11 mm+7%
Specifications
Side by side
| Design & durability | ||
| Case size | 48 mm | 47 mm |
| Weight | 49.7 g | 43 g |
| Thickness | 11.8 mm | 11 mm |
| Height | 47.6 mm | 47.4 mm |
| Width | 46.6 mm | 47.4 mm |
| Case material | Stainless steel | — |
| Sapphire crystal | Yes | Yes |
| Lens / cover glass | Sapphire crystal glass | Sapphire crystal glass |
| Strap material | Fluorelastomer | — |
| Water resistance | 5 ATM | 5 ATM |
| Ingress protection | IP68 | IP68 |
| Water resistance (IPx) | IPx8 | IPx8 |
| Water rating (maker) | 50 m / 5 bar / 5 ATM | — |
| Military-grade (MIL-STD-810) | Yes | Yes |
| Colours | Black titanium, Silver titanium | Midnight Titanium, Evergreen Titanium |
| Display | ||
| Screen size | 1.5″ | 1.5″ |
| Display technology | AMOLED | AMOLED |
| Panel | LTPO AMOLED | LTPO AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Always-on display | Yes | — |
| Touchscreen | Yes | — |
| Resolution (width) | 466 px | 466 px |
| Resolution (height) | 466 px | 466 px |
| Pixel density | 310 ppi | 310 ppi |
| Peak brightness | 2,200 nits | 3,000 nits |
| LTPO display | Yes | Yes |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery life (smartwatch mode) | 5 days | — |
| Battery capacity | 648 mAh | 646 mAh |
| Battery type | Li-Ion | Si/C |
| Wireless charging | No | No |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | Yes | Yes |
| Skin temperature | Yes | Yes |
| Temperature sensor | Yes | Yes |
| Sleep tracking | Yes | — |
| Sensors | Accelerometer, gyro, barometer, compass, heart rate, SpO2, thermometer (skin temperature) | 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 | GLONASS, GALILEO, BDS, QZSS |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Multisport / triathlon mode | Yes | — |
| Connectivity | ||
| NFC payments | Yes | Yes |
| LTE (cellular) | No | No |
| eSIM | No | No |
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 5.2 | 5.2 |
| Smart features | ||
| Speaker | Yes | Yes |
| Voice assistant | Yes | — |
| Music on the watch | Yes | — |
| Storage | 32 GB | 32 GB |
| RAM | 2 GB | 2 GB |
| Platform | ||
| Operating system | ColorOS Watch 7.0 + Wear OS 5.0 | OxygenOS Watch 8 + Wear OS 7.0 |
| Platform | Wear OS | Wear OS |
| Works with | Android | — |
| Chipset | Qualcomm Snapdragon W5 Gen 1 | Qualcomm Snapdragon W5 Gen 1 |
