Samsung Galaxy Watch 4 was officially unveiled on August 11, 2021 at the Samsung Unpacked Event alongside the Samsung Watch Galaxy From Flip 3, Samsung Galaxy From Fold 3 a Galaxy Buds 2. This was Samsung's first watch with the system Wear Google's OS from the Samsung Gear Live and the first watch with the system Wear OS 3 jointly developed by Samsung and Google. The device largely followed the design language of previous Samsung watches Galaxy Watch Activate Galaxy Watch 3, but offered completely different software. The watch also offered EKG, body composition analysis and blood pressure monitoring via Samsung's new BioActive sensor.
Technical Specifications
| Performance date | 11. August 2021 | |
| Capacity | 16GB | |
| RAM | 1,5GB | |
| Dimensions | 40,4mm x 39,3mm x 9,8mm (42mm), 44,4mm x 43,3mm x 9,8mm (44mm) | |
| Weight | 25,9g (42mm), 30,3g (44mm) | |
| Display | 1,2" (42mm), 1,4" (44mm) | |
| Chip | Exynos W920 dual-core 1.18 GHz Cortex-A55 | |
| Networks | 4G / LTE | |
| Connectivity | Bluetooth 5.0 Wi-Fi a/b/g/n 2.4+5 GHz NFC A-GPS, GLONASS, Beidou, Galileo | |
| Battery | 247mAh (42mm), 361mAh (44mm) |
