vs
6.8Display8.8
5.0Health tracking9.2
9.5Sports & outdoor8.0
9.7Build & durability8.4
Dimensions
Size comparison
Balance 2Watch Series 9 Aluminum
| Balance 2 | Watch Series 9 Aluminum | Difference | |
|---|---|---|---|
| Height | 47.4 mm | 45 mm | +2.4 mm |
| Width | 47.4 mm | 38 mm | +9.4 mm |
| Thickness | 12.3 mm | 10.7 mm | +1.6 mm |
| Weight | 43 g | 32 g | +11 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Balance 2 better than Watch Series 9 Aluminum?
- Water resistance10 ATM vs 5 ATM2×
- Battery capacity658 mAh vs 308 mAh2.1×
- Resolution (width)480 px vs 396 px+21%
Why is Watch Series 9 Aluminum better than Balance 2?
- Weight43 g vs 31.9 g+35%
- Screen size1.5″ vs 1.9″+27%
- Thickness12.3 mm vs 10.7 mm+15%
Specifications
Side by side
| Design & durability | ||
| Case size | 47 mm | 45 mm |
| Weight | 43 g | 31.9 g |
| Thickness | 12.3 mm | 10.7 mm |
| Height | 47.4 mm | 45 mm |
| Width | 47.4 mm | 38 mm |
| Case material | Aluminium | Aluminium |
| Sapphire crystal | Yes | Yes |
| Lens / cover glass | Sapphire glass | Ion-X strengthened glass |
| Water resistance | 10 ATM | 5 ATM |
| Ingress protection | — | IP6X |
| Colours | — | Midnight, Starlight, Silver, Pink, Red |
| Display | ||
| Screen size | 1.5″ | 1.9″ |
| Display technology | AMOLED | OLED |
| Panel | AMOLED | Retina LTPO OLED |
| AMOLED / OLED display | Yes | Yes |
| Touchscreen | Yes | — |
| Resolution (width) | 480 px | 396 px |
| Resolution (height) | 480 px | 484 px |
| Pixel density | 323 ppi | 326 ppi |
| Peak brightness | 2,000 nits | 2,000 nits |
| LTPO display | — | Yes |
| Refresh rate | — | 60 Hz |
| Battery | ||
| Battery life (smartwatch mode) | 21 days | — |
| GPS battery life (dual-band) | 33 h | — |
| Battery capacity | 658 mAh | 308 mAh |
| Battery type | — | Li-Ion |
| Wireless charging | — | Yes |
| Charged in 30 min | — | 53% |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | — | Yes |
| Skin temperature | — | Yes |
| Temperature sensor | Yes | Yes |
| Sleep tracking | Yes | — |
| Sensors | — | Accelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body) |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | Yes | — |
| Satellite systems | — | GLONASS, GALILEO, BDS, QZSS |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Sport profiles | 180 | — |
| Connectivity | ||
| NFC payments | — | Yes |
| LTE (cellular) | — | Yes |
| eSIM | — | Yes |
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 5.2 | 5.3 |
| Ultra Wideband | — | Yes |
| Smart features | ||
| Calls from the wrist | Yes | — |
| Speaker | — | Yes |
| Microphone | Yes | — |
| Voice assistant | Yes | — |
| Storage | — | 64 GB |
| Platform | ||
| Operating system | — | watchOS 10 |
| Platform | Proprietary | watchOS |
| Works with | Android, iOS | — |
| Chipset | — | Apple S9 |
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