Dimensions
Size comparison
Watch 2Watch 3
| Watch 2 | Watch 3 | Difference | |
|---|---|---|---|
| Height | 47 mm | 47.6 mm | −0.6 mm |
| Width | 46.6 mm | 46.6 mm | = |
| Thickness | 12.1 mm | 11.8 mm | +0.3 mm |
| Weight | 49 g | 50 g | −1 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Watch 2 better than Watch 3?
- Pixel density326 ppi vs 310 ppi+5%
Why is Watch 3 better than Watch 2?
- Peak brightness1,000 nits vs 2,200 nits2.2×
- Battery life (smartwatch mode)4.2 days vs 5 days+19%
- Screen size1.43″ vs 1.5″+5%
- Battery capacity500 mAh vs 648 mAh+30%
- Thickness12.1 mm vs 11.8 mm+3%
Specifications
Side by side
| Design & durability | ||
| Case size | 47 mm | 48 mm |
| Weight | 49 g | 49.7 g |
| Thickness | 12.1 mm | 11.8 mm |
| Height | 47 mm | 47.6 mm |
| Width | 46.6 mm | 46.6 mm |
| Case material | Stainless steel | Stainless steel |
| Sapphire crystal | Yes | Yes |
| Lens / cover glass | Sapphire crystal glass | Sapphire crystal glass |
| Strap material | Fluorelastomer | Fluorelastomer |
| Water resistance | 5 ATM | 5 ATM |
| Ingress protection | IP68 | IP68 |
| Water resistance (IPx) | IPx8 | IPx8 |
| Water rating (maker) | 1 m / 5 ATM | 50 m / 5 bar / 5 ATM |
| Military-grade (MIL-STD-810) | Yes | Yes |
| Colours | Black Steel, Radiant Steel | Black titanium, Silver titanium |
| Display | ||
| Screen size | 1.43″ | 1.5″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | LTPO AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Always-on display | Yes | Yes |
| Touchscreen | Yes | Yes |
| Resolution (width) | 466 px | 466 px |
| Resolution (height) | 466 px | 466 px |
| Pixel density | 326 ppi | 310 ppi |
| Peak brightness | 1,000 nits | 2,200 nits |
| LTPO display | — | Yes |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery life (smartwatch mode) | 4.2 days | 5 days |
| Battery life (hours) | 100 h | — |
| Battery capacity | 500 mAh | 648 mAh |
| Battery type | — | Li-Ion |
| Wireless charging | No | No |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | — | Yes |
| Skin temperature | — | Yes |
| Temperature sensor | — | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | Accelerometer, gyro, barometer, compass, heart rate, SpO2 | Accelerometer, gyro, barometer, compass, heart rate, SpO2, thermometer (skin temperature) |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | Yes | Yes |
| Satellite systems | GLONASS, GALILEO, BDS, QZSS | GLONASS, GALILEO, BDS, QZSS |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Multisport / triathlon mode | Yes | Yes |
| Connectivity | ||
| NFC payments | Yes | Yes |
| LTE (cellular) | No | No |
| eSIM | No | No |
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 5 | 5.2 |
| Smart features | ||
| Speaker | Yes | Yes |
| Voice assistant | Yes | Yes |
| Music on the watch | Yes | Yes |
| Storage | 32 GB | 32 GB |
| RAM | 2 GB | 2 GB |
| Platform | ||
| Operating system | Android Wear OS 4 + RTOS | ColorOS Watch 7.0 + Wear OS 5.0 |
| Platform | Android | Wear OS |
| Works with | Android | Android |
| Chipset | Qualcomm Snapdragon W5 Gen 1 | Qualcomm Snapdragon W5 Gen 1 |
