vs
2.2Display5.8
9.4Health tracking4.9
Dimensions
Size comparison
Neo 2 2025 rundSiona 2 Nano
| Neo 2 2025 rund | Siona 2 Nano | Difference | |
|---|---|---|---|
| Case size | 40 mm | 37 mm | +3 mm |
| Thickness | 10.9 mm | 6.9 mm | +4 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is Neo 2 2025 rund better than Siona 2 Nano?
Neo 2 2025 rund has no measurable advantages in this pair.
Why is Siona 2 Nano better than Neo 2 2025 rund?
- Battery life (smartwatch mode)3 days vs 6 days2×
- AMOLED / OLED displayNo · Neo 2 2025 rund: Yes
- Screen size1.27″ vs 1.3″+2%
- Thickness10.9 mm vs 6.9 mm+58%
Specifications
Side by side
| Design & durability | ||
| Case size | 40 mm | 37 mm |
| Thickness | 10.9 mm | 6.9 mm |
| Case material | Stainless steel | — |
| Strap material | — | Edelstahl |
| Display | ||
| Screen size | 1.27″ | 1.3″ |
| Display technology | — | AMOLED |
| Panel | IPS | AMOLED |
| AMOLED / OLED display | No | Yes |
| Always-on display | — | Yes |
| Resolution (width) | 360 px | — |
| Resolution (height) | 360 px | — |
| Battery | ||
| Battery life (smartwatch mode) | 3 days | 6 days |
| Battery capacity | 300 mAh | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | Yes | Yes |
| Skin temperature | Yes | — |
| Sleep tracking | Yes | Yes |
| Sensors | heart rate, SpO2, accelerometer | heart rate, SpO2, accelerometer |
| Sports & navigation | ||
| Multisport / triathlon mode | — | Yes |
| LED flashlight | Yes | — |
| Connectivity | ||
| Bluetooth | 5.3 | 5 |
| Platform | ||
| Works with | — | iOS, Android |
