I've tested my Galaxy watch 7 against an Omcron NHS certified blood pressure machine and also re calibrated every week. I get a few numbers out for each ...which I'm happy with.

I had a cardiac stress test recently and wore my galaxy 4 watch at same time. My watch readings were less than 5 beats different from the hospital machines throughout the test. I was impressed with the accuracy. 

Also remember those home blood pressure machines need you to be still so would have wildly inaccurate readings if you are exercising (ie moving)

Was tht a hughky paid government funded project

 I've only had a Huawei band watch but all smart watches are pointless you can use free apps on phone and over time you learn how far too walk exercise etc and they need regularly charge waste of money in my opinion but each to there own

I noticed that it's much more accurate when moved up over an inch from wrist bone. Used to get crazy reading before that.

The blood oxygen sensor is wildly inaccurate too. Go figure.

I seem to get more realistic results wearing the watch a little tighter and on the inside of my wrist. Cadence lock is an issue with these watches and that seems to help.

Quote from: AdamE on February 14, 2025, 07:40:10Just use your fingers on neck and count beats for 5 seconds and multiply by 12 and that will give you approximate HR that you can use to compare to watch readings.

100% this. And no need to compare to anything. But instead people need to wear a "smart"watch to check if they are alive I guess, because how else could they tell if their heart is still beating 🫠 Slaves of inaccurate tech.

Just use your fingers on neck and count beats for 5 seconds and multiply by 12 and that will give you approximate HR that you can use to compare to watch readings.

I'm almost 100% this is thanks to Samsung using that trash called WearOS.

These issues were unheard of when they were using Tizen. And Apple doesnt have these issues