James R9 vs Knauermann PRO 4 Ultra Smartwatch silber, Silikonband schwarz, Anruf & SOS
What R9 does better (0) and where PRO 4 Ultra Smartwatch silber, Silikonband schwarz, Anruf & SOS wins (1) — every spec side by side.
vs
Knauermann · 2026PRO 4 Ultra Smartwatch silber, Silikonband schwarz, Anruf & SOS
8.8Score
Higher score 1 advantage≈ $270
9.1Display8.6
Why is R9 better than PRO 4 Ultra Smartwatch silber, Silikonband schwarz, Anruf & SOS?
R9 has no measurable advantages in this pair.
Why is PRO 4 Ultra Smartwatch silber, Silikonband schwarz, Anruf & SOS better than R9?
- Screen size1.43″ vs 1.95″+36%
Specifications
Side by side
| Design & durability | ||
| Case size | — | 24 mm |
| Strap material | — | Silikon |
| Colours | Black | Silver, Black |
| Display | ||
| Screen size | 1.43″ | 1.95″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Always-on display | — | Yes |
| Resolution (width) | 360 px | — |
| Resolution (height) | 360 px | — |
| Battery | ||
| Battery life (smartwatch mode) | 2 days | — |
| Battery capacity | 670 mAh | — |
| Battery type | Li-Po | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | — | Yes |
| Sensors | — | heart rate, SpO2 |
| Sports & navigation | ||
| Built-in GPS | — | Yes |
| Satellite systems | — | GPS |
| Connectivity | ||
| LTE (cellular) | Yes | — |
| Platform | ||
| Works with | — | iOS, Android |
