Dimensions
Size comparison
Watch 4J888
| Watch 4 | J888 | Difference | |
|---|---|---|---|
| Case size | 46.2 mm | 45 mm | +1.2 mm |
| Thickness | 10.9 mm | 14 mm | −3.1 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is Watch 4 better than J888?
- Thickness10.9 mm vs 14 mm+28%
Why is J888 better than Watch 4?
- Water resistance5 ATM vs 20 ATM4×
Specifications
Side by side
| Design & durability | ||
| Case size | 46 mm | 45 mm |
| Weight | 48 g | — |
| Thickness | 10.9 mm | 14 mm |
| Height | 46.2 mm | — |
| Width | 46.2 mm | — |
| Case material | Stainless steel | Stainless steel |
| Sapphire crystal | — | Yes |
| Lens / cover glass | — | Saphirglas Saphirglas |
| Strap material | Leder, Fluorelastomer | Edelstahl |
| Water resistance | 5 ATM | 20 ATM |
| Ingress protection | IP6X | — |
| Water rating (maker) | 50 m / 5 bar / 5 ATM | 200 m / 20 bar / 20 ATM |
| Colours | Black | Silver |
| Display | ||
| Screen size | 1.5″ | — |
| Display technology | AMOLED | — |
| Panel | AMOLED | — |
| AMOLED / OLED display | Yes | — |
| Touchscreen | Yes | — |
| Resolution (width) | 466 px | — |
| Resolution (height) | 466 px | — |
| Pixel density | 310 ppi | — |
| Refresh rate | 60 Hz | — |
| Battery | ||
| Battery life (smartwatch mode) | 3 days | — |
| Battery capacity | 530 mAh | — |
| 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 | — |
| Sleep tracking | Yes | — |
| Sensors | Accelerometer, gyro, heart rate, barometer, compass, SpO2, thermometer (body temperature) | accelerometer |
| Sports & navigation | ||
| Built-in 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 | — |
| Voice assistant | 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 |
| Chipset | Qualcomm Snapdragon W5 Gen 1 | — |
