Smart Watch, CNPGD Fitness Tracker
It uses the WearFit 2.0 app and “sleep as android” tried pulling spo2 but errors out, wondering if you are interested in adding a budget option
I found some links that might be open enough for us to pull the information needed
https://en.iwhop.com/list_Wearfit_Os.html?id=5
This would be a great option to get started with wearables
I have a rooted phone to pull info for it if needed.