4.2Build & durability9.8
Dimensions
Size comparison
Watch 4 ProJ888
| Watch 4 Pro | J888 | Difference | |
|---|---|---|---|
| Case size | 47.6 mm | 45 mm | +2.6 mm |
| Thickness | 12.9 mm | 14 mm | −1.1 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is Watch 4 Pro better than J888?
- Thickness12.9 mm vs 14 mm+9%
Why is J888 better than Watch 4 Pro?
- Water resistance5 ATM vs 20 ATM4×
Specifications
Side by side
| Design & durability | ||
| Case size | 48 mm | 45 mm |
| Weight | 65 g | — |
| Thickness | 12.9 mm | 14 mm |
| Height | 47.6 mm | — |
| Width | 47.6 mm | — |
| Case material | Titanium | Stainless steel |
| Sapphire crystal | Yes | Yes |
| Lens / cover glass | Sapphire crystal glass | Saphirglas Saphirglas |
| Strap material | — | Edelstahl |
| Water resistance | 5 ATM | 20 ATM |
| Water rating (maker) | 50 m / 5 bar / 5 ATM | 200 m / 20 bar / 20 ATM |
| Colours | Titanium | Silver |
| Display | ||
| Screen size | 1.5″ | — |
| Display technology | AMOLED | — |
| Panel | LTPO AMOLED | — |
| AMOLED / OLED display | Yes | — |
| Resolution (width) | 466 px | — |
| Resolution (height) | 466 px | — |
| Pixel density | 310 ppi | — |
| LTPO display | Yes | — |
| Refresh rate | 60 Hz | — |
| Battery | ||
| Battery life (smartwatch mode) | 4.5 days | — |
| Battery type | Li-Ion | — |
| Wireless charging | Yes | — |
| Health sensors | ||
| Optical heart rate | Yes | — |
| Blood oxygen (SpO2) | Yes | — |
| ECG | Yes | — |
| Skin temperature | Yes | — |
| Temperature sensor | Yes | — |
| Sensors | Accelerometer, gyro, heart rate, barometer, compass, SpO2, thermometer (body temperature) | accelerometer |
| Sports & navigation | ||
| Built-in GPS | Yes | — |
| Dual-band GPS | Yes | — |
| Satellite systems | GLONASS, GALILEO, BDS, QZSS | — |
| Barometric altimeter | Yes | — |
| Compass | Yes | — |
| Multisport / triathlon mode | Yes | — |
| Connectivity | ||
| NFC payments | Yes | — |
| LTE (cellular) | Yes | — |
| eSIM | Yes | — |
| Wi-Fi | Wi-Fi 4 | — |
| Bluetooth | 5.2 | 5 |
| Smart features | ||
| Speaker | Yes | — |
| Music on the watch | Yes | — |
| Storage | 32 GB | — |
| RAM | 2 GB | — |
| Platform | ||
| Operating system | HarmonyOS 3.0 | — |
| Platform | HarmonyOS | — |
| Works with | iOS, Android | iOS, Android |
