vs
4.9Health tracking4.9
Dimensions
Size comparison
Series 29 AMOLED Smart Calling WatchSiona 2 Nano
| Series 29 AMOLED Smart Calling Watch | Siona 2 Nano | Difference | |
|---|---|---|---|
| Case size | 51 mm | 37 mm | +14 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is Series 29 AMOLED Smart Calling Watch better than Siona 2 Nano?
Series 29 AMOLED Smart Calling Watch has no measurable advantages in this pair.
Why is Siona 2 Nano better than Series 29 AMOLED Smart Calling Watch?
Siona 2 Nano has no measurable advantages in this pair.
Specifications
Side by side
| Design & durability | ||
| Case size | 51 mm | 37 mm |
| Thickness | — | 6.9 mm |
| Strap material | Silikon | Edelstahl |
| Colours | Blue, Black | — |
| Display | ||
| Screen size | — | 1.3″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Always-on display | — | Yes |
| Battery | ||
| Battery life (smartwatch mode) | — | 6 days |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | — | Yes |
| Sleep tracking | — | Yes |
| Sensors | SpO2 | heart rate, SpO2, accelerometer |
| Sports & navigation | ||
| Built-in GPS | Yes | — |
| Satellite systems | GPS | — |
| Multisport / triathlon mode | — | Yes |
| Connectivity | ||
| Bluetooth | 5.1 | 5 |
| Platform | ||
| Works with | iOS, Android | iOS, Android |
Related comparisons
vs
Motorola Moto Watch 2vsPeers Hardy Series 29 AMOLED Smart Calling Watch
vsKospet Tank T4vsPeers Hardy Series 29 AMOLED Smart Calling Watch
vsMotorola moto watch ultravsPeers Hardy Series 29 AMOLED Smart Calling Watch
vsKnauermann Pro 4 2026 MinivsPeers Hardy Series 29 AMOLED Smart Calling Watch
vsSuunto Run 2vsPeers Hardy Series 29 AMOLED Smart Calling Watch
vsSuunto Core 2vsPeers Hardy Series 29 AMOLED Smart Calling Watch