Dimensions
Size comparison
Pro 4 AirRun 2
| Pro 4 Air | Run 2 | Difference | |
|---|---|---|---|
| Case size | 47 mm | 46.5 mm | +0.5 mm |
| Thickness | 9.9 mm | 11.7 mm | −1.8 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is Pro 4 Air better than Run 2?
- Screen size1.56″ vs 1.32″+18%
- Thickness9.9 mm vs 11.7 mm+18%
- Battery capacity440 mAh vs 380 mAh+16%
- Resolution (width)480 px vs 466 px+3%
Why is Run 2 better than Pro 4 Air?
- Battery life (smartwatch mode)5 days vs 12 days2.4×
Specifications
Side by side
| Design & durability | ||
| Case size | 47 mm | 46 mm |
| Weight | — | 53 g |
| Thickness | 9.9 mm | 11.7 mm |
| Height | — | 46.5 mm |
| Width | — | 46.5 mm |
| Case material | Stainless steel | Stainless steel |
| Lens / cover glass | — | Gorilla Glas |
| Strap material | — | Silikon |
| Water resistance | — | 5 ATM |
| Water rating (maker) | — | 50 m / 5 bar / 5 ATM |
| Display | ||
| Screen size | 1.56″ | 1.32″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Always-on display | Yes | Yes |
| Touchscreen | — | Yes |
| Resolution (width) | 480 px | 466 px |
| Resolution (height) | 480 px | 466 px |
| Pixel density | — | 353 ppi |
| Battery | ||
| Battery life (smartwatch mode) | 5 days | 12 days |
| GPS battery life | — | 30 h |
| GPS battery life (dual-band) | — | 24 h |
| Battery capacity | 440 mAh | 380 mAh |
| Battery type | — | rechargeable lithium-ion |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | Yes | — |
| Skin temperature | Yes | — |
| Temperature sensor | — | Yes |
| HRV tracking | Yes | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | heart rate, SpO2 | heart rate, SpO2, accelerometer |
| Sports & navigation | ||
| Built-in GPS | — | Yes |
| Dual-band GPS | — | Yes |
| Satellite systems | — | GPS |
| Offline maps | — | Yes |
| Barometric altimeter | — | Yes |
| Compass | — | Yes |
| Multisport / triathlon mode | — | Yes |
| Sport profiles | — | 32 |
| Connectivity | ||
| Wi-Fi | — | Wi-Fi 1 |
| Bluetooth | 5.1 | 5 |
| Smart features | ||
| Music on the watch | — | Yes |
| Platform | ||
| Operating system | — | Suunto OS |
| Platform | — | Proprietary |
| Works with | iOS, Android | iOS, Android |
| Chipset | Jieli AC7013A | — |
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