9.8Build & durability3.5
Dimensions
Size comparison
J888Watch 4 Pro
| J888 | Watch 4 Pro | Difference | |
|---|---|---|---|
| Case size | 45 mm | 38.3 mm | +6.7 mm |
| Thickness | 14 mm | 12.9 mm | +1.1 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is J888 better than Watch 4 Pro?
- Water resistance20 ATM vs 5 ATM4×
Why is Watch 4 Pro better than J888?
- Thickness14 mm vs 12.9 mm+9%
Specifications
Side by side
| Design & durability | ||
| Case size | 45 mm | 50 mm |
| Weight | — | 52.3 g |
| Thickness | 14 mm | 12.9 mm |
| Height | — | 50.1 mm |
| Width | — | 38.3 mm |
| Case material | Stainless steel | Stainless steel |
| Sapphire crystal | Yes | — |
| Lens / cover glass | Saphirglas Saphirglas | — |
| Strap material | Edelstahl | — |
| Water resistance | 20 ATM | 5 ATM |
| Water rating (maker) | 200 m / 20 bar / 20 ATM | — |
| Colours | Silver | Black, Silver |
| Display | ||
| Screen size | — | 1.91″ |
| Display technology | — | AMOLED |
| Panel | — | LTPO AMOLED |
| AMOLED / OLED display | — | Yes |
| Resolution (width) | — | 378 px |
| Resolution (height) | — | 496 px |
| Pixel density | — | 327 ppi |
| LTPO display | — | Yes |
| Refresh rate | — | 60 Hz |
| Battery | ||
| Battery capacity | — | 570 mAh |
| Battery type | — | Li-Ion |
| Health sensors | ||
| Optical heart rate | — | Yes |
| Blood oxygen (SpO2) | — | Yes |
| ECG | — | Yes |
| Skin temperature | — | Yes |
| Temperature sensor | — | Yes |
| Sensors | accelerometer | Accelerometer, gyro, heart rate, compass, barometer, SpO2, thermometer (skin temperature) |
| Sports & navigation | ||
| Built-in GPS | — | Yes |
| Satellite systems | — | GLONASS, GALILEO, BDS, QZSS |
| Barometric altimeter | — | Yes |
| Compass | — | Yes |
| Connectivity | ||
| NFC payments | — | Yes |
| LTE (cellular) | — | Yes |
| eSIM | — | Yes |
| Wi-Fi | — | Wi-Fi 4 |
| Bluetooth | 5 | 5 |
| Smart features | ||
| Speaker | — | Yes |
| Storage | — | 32 GB |
| RAM | — | 2 GB |
| Platform | ||
| Operating system | — | ColorOS Watch 3.0 - China |
| Platform | — | Proprietary |
| Works with | iOS, Android | — |
| Chipset | — | Qualcomm Snapdragon W5+ Gen 1 |
