Dimensions
Size comparison
J888Watch X
| J888 | Watch X | Difference | |
|---|---|---|---|
| Case size | 45 mm | 46.6 mm | −1.6 mm |
| Thickness | 14 mm | 12.1 mm | +1.9 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is J888 better than Watch X?
- Water resistance20 ATM vs 5 ATM4×
Why is Watch X better than J888?
- Thickness14 mm vs 12.1 mm+16%
Specifications
Side by side
| Design & durability | ||
| Case size | 45 mm | 47 mm |
| Weight | — | 49 g |
| Thickness | 14 mm | 12.1 mm |
| Height | — | 47 mm |
| Width | — | 46.6 mm |
| Case material | Stainless steel | Stainless steel |
| Sapphire crystal | Yes | Yes |
| Lens / cover glass | Saphirglas Saphirglas | Sapphire crystal glass |
| Strap material | Edelstahl | — |
| Water resistance | 20 ATM | 5 ATM |
| Ingress protection | — | IP68 |
| Water resistance (IPx) | — | IPx8 |
| Water rating (maker) | 200 m / 20 bar / 20 ATM | — |
| Military-grade (MIL-STD-810) | — | Yes |
| Colours | Silver | Platinum Black, Brown |
| Display | ||
| Screen size | — | 1.43″ |
| Display technology | — | AMOLED |
| Panel | — | AMOLED |
| AMOLED / OLED display | — | Yes |
| Resolution (width) | — | 466 px |
| Resolution (height) | — | 466 px |
| Pixel density | — | 326 ppi |
| Peak brightness | — | 1,000 nits |
| Refresh rate | — | 60 Hz |
| Battery | ||
| Battery capacity | — | 500 mAh |
| Wireless charging | — | No |
| Health sensors | ||
| Optical heart rate | — | Yes |
| Blood oxygen (SpO2) | — | Yes |
| Sensors | accelerometer | Accelerometer, gyro, barometer, compass, heart rate, SpO2 |
| Sports & navigation | ||
| Built-in GPS | — | Yes |
| Dual-band GPS | — | Yes |
| Satellite systems | — | GLONASS, GALILEO, BDS, QZSS |
| Barometric altimeter | — | Yes |
| Compass | — | Yes |
| Connectivity | ||
| NFC payments | — | Yes |
| LTE (cellular) | — | No |
| eSIM | — | No |
| Wi-Fi | — | Wi-Fi 4 |
| Bluetooth | 5 | 5 |
| Smart features | ||
| Speaker | — | Yes |
| Storage | — | 32 GB |
| RAM | — | 2 GB |
| Platform | ||
| Operating system | — | Android Wear OS 4 |
| Platform | — | Android |
| Works with | iOS, Android | — |
| Chipset | — | Qualcomm Snapdragon W5 Gen 1 |
