vs
6.7Display5.8
4.9Health tracking4.9
Dimensions
Size comparison
ArionSiona 2 Nano
| Arion | Siona 2 Nano | Difference | |
|---|---|---|---|
| Case size | 43 mm | 37 mm | +6 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is Arion better than Siona 2 Nano?
Arion has no measurable advantages in this pair.
Why is Siona 2 Nano better than Arion?
Siona 2 Nano has no measurable advantages in this pair.
Specifications
Side by side
| Design & durability | ||
| Case size | 43 mm | 37 mm |
| Thickness | — | 6.9 mm |
| Case material | Plastic / polymer | — |
| Strap material | Silikon | Edelstahl |
| Water resistance | 3 ATM | — |
| Water rating (maker) | 30 m / 3 bar / 3 ATM | — |
| Colours | Gold | — |
| Display | ||
| Screen size | 1.32″ | 1.3″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Always-on display | — | Yes |
| Resolution (width) | 466 px | — |
| Resolution (height) | 466 px | — |
| Battery | ||
| Battery life (smartwatch mode) | 6 days | 6 days |
| Battery capacity | 350 mAh | — |
| Battery type | Li-Po | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | — | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | heart rate, barometer, accelerometer | heart rate, SpO2, accelerometer |
| Sports & navigation | ||
| Built-in GPS | Yes | — |
| Satellite systems | GPS, GLONASS, GALILEO, BDS | — |
| Barometric altimeter | Yes | — |
| Compass | Yes | — |
| Multisport / triathlon mode | — | Yes |
| LED flashlight | Yes | — |
| Connectivity | ||
| Bluetooth | 5.3 | 5 |
| Smart features | ||
| Voice assistant | Yes | — |
| Platform | ||
| Works with | iOS, Android | iOS, Android |
