Herz P1 Smart Ring – do I need to wear it on a specific finger?

I actually had to move mine to my non-dominant hand because the readings were kinda off on my dominant one, guess all the typing and moving messes with it. Finger-wise I started on my ring finger but it was too loose, so now it lives on my middle finger and that’s been way more consistent. So yeah, hand and finger can matter more than people admit.

I’ve had mine on my middle finger for a couple months now and it’s been fine. Honestly I just picked that one because it was the best fit in the sizing kit. Never bothered switching hands.

I went into it thinking finger placement was mostly a gimmick, something the app tells you so it feels like there’s more to it. After a few months the only thing that actually mattered to me was whether the ring stayed put. I started on my ring finger because that was the best fit from the sizing kit, no other reason. Readings were steady enough for what I use it for.

What changed my mind was when I tried moving it to another hand for a day just to see. Sleep data looked roughly the same, heart rate during the day had a few gaps but nothing dramatic. So I stopped caring about the whole finger debate. The ring doesn’t know or care what finger it’s on, it just wants skin contact that doesn’t slip.

One thing I’ll say is that a finger that’s too loose is worse than picking the “wrong” finger. If it spins or slides around at night, that’s when you get weird numbers. I’d sort the fit first and then stop thinking about it. Anyone obsessing over index vs middle is skipping the part that actually affects the data.

I’d figure out which finger actually fits first and not get cute about it. That’s the whole answer.

People act like there’s some secret finger that unlocks better data. There isn’t. What matters is the ring not sliding around and the inside of it sitting flat against your skin. If it spins or you can peel it off without resistance, the numbers get sloppy. That part is real. But it has nothing to do with index versus middle versus whatever.

What I’d actually do is get the sizing kit, wear the sample on a couple different fingers for a full day each, and pay attention to which one stays put when you’re sleeping. Most people never think about that part. You roll over, your hand swells a little, and a ring that felt fine at noon is either strangling you at 3am or rotated halfway around. That’s the deciding factor, not some chart.

Same with hands. Whichever one you use less for gripping and typing is going to give you cleaner readings, but that’s not a rule you have to follow, it’s just physics. If your dominant hand is the only one that fits comfortably, use it and move on.

Nobody’s going to look at your data and go “ah, wrong finger.” The ring doesn’t know or care. Pick the one that’s comfortable and stays in place overnight, then stop thinking about it.

I wore mine on my ring finger for a while, then switched to my index finger just because it fit better, and honestly the readings looked about the same to me. The app does let you set which finger and hand you’re using, so it’s not like you’re locked into one spot. I’d just go with whatever finger feels comfortable enough to forget about.

I’ve actually had better luck wearing mine on the same finger every day rather than moving it around. Switching hands messed with my sleep data a bit because it kept thinking I was starting over. So I just picked the one that stays put and stopped fiddling with it.