You have to enable it… it’s disabled by default… It’s Settings > Screen Time > Screen Distance. Or else hold the phone further away from your face and protect your eye sight 🤷🏻‍♂️

I’m still grateful for my SE2 either way though. It’s still a great device. The Battery Life is about 22 hours with Light Use and Sleep Tracking

I have the SE2 as it was a whole-family-joint Christmas Present but I wish I had the O2 Monitoring, ECG and Always-On-Display but I felt too bad about asking for the Receipt to exchange it…

That’s WatchOS 10.1.1 which OP is already on :)