A new firmware update is now rolling out to Huawei's Watch GT 2 that brings the SpO2 monitoring feature. With this feature, the device now gains parity with the recently launched GT 2e.
Spo2 RSS
iOS 14 code snippets hint at the possible addition of a blood oxygen saturation feature for the Apple Watch, along with notifications for anomalies. The ECG feature's accuracy might also be updated.