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So basically if you've got a S4 or S5, you're better off buying a €10 finger pulse ox off Amazon than "upgrading".
 
I believe the return policy is 14 days, so you can buy the SE and see if it works for you, if not you can upgrade.
That’s a good idea, thanks. But I’m not sure how I could assess on whether or not I am missing the features of the series 6.

edit: just realised that I could buy both and see if I do use the features of the 6 enough to keep it. Otherwise I can return the 6 and keep the SE. Thanks again
 
I used to wear my watch on the inside of my wrist all the time when I first started wearing one. I got back into the habit when the Apple Watch came out, and then realized that wearing it on the inside of my right wrist made mouse use tricky, since the watch was always resting on the tabletop.

After wearing it in different situations I decided I’ll wear the watch on the outside when I’m at my desk and wear the watch on the inside when I’m outdoors and asleep. The Solo Loop makes this easy and quick to do.
 
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