I am IOS user. I need watch which should support below functions with my Iphone…
- BT calling/ Answering the call
- Notifications & reply to the notifications
- ECG sensor
- Heart rate sensor
- Stress sensor
- Play Store
- Custom faces
- Mic and speaker
- Good battery timing
- Connect to Airpods
Sorry, but the watches discussed here don’t support 1, 3, 6, or 11, at least not yet. Not sure what you mean by 5.
Spo2 is heart oxygen sensor.
No apple watch, then I think you may have a little problem. Because their is no Android watch currently available or in the near future that will meet your expectations.