Here’s some info -
The OPPO Watch 4 Pro is a smartwatch that was announced in China in March 2023. It has a number of features, including blood oxygen monitoring, heart rate monitoring, ECG, sleep quality analysis, and stress gauging. However, the most notable feature of the OPPO Watch 4 Pro is its ability to monitor blood sugar levels in real time using non-invasive tracking.
It is important to note that the OPPO Watch 4 Pro is not yet available outside of China. It is also not clear if the blood sugar monitoring feature will be available in all regions when the watch is released globally.
Just a heads up, a different publication issued a correction regarding the blood glucose monitoring on the 4 (non-Pro)
https://9to5google.com/2023/05/19/huawei-watch-4-blood-sugar/
Update: This post has been updated to clarify that the Huawei Watch 4 cannot track blood sugar levels, but is (somehow) claimed to be used to help track high blood sugar. We apologize for the error.
Edit: Corrected info above pertains to the Oppo Watch 4 not the 4 Pro.
I’d be interested if the 4 Pro differs from the 4 (released 3 months ago).