I bought a cheap wrist one and regretted it. Never really worked accurately. The Omron is good. The secret is keeping it at the right height with heart.
Blood Pressure Explained I had watched this, but since u offered, I watched again. My problem is there was not enough time spent explaining how tight the cuff should be. A quick, tight enough so one finger fits ‘your finger’. How tight is that I’d my finger is half the size of your finger?
The cuff should be FIRMLY wrapped around, with NO SPACE between the cuff and wrist. In addition, it shouldn't be over the protruding bone on the top side of your wrist. If it is, it may create a gap. I hope that helps. I checked the Omron manual for you and that's the only instruction they give.