I think I am not exactly the intended audience for these devices right now, so my comment will be a bit general. I don't want "a geeky alternative to apple watch" (or an apple watch, for that matter), I basically want Garmin Forerunner 955 alternative that won't keep my data hostage. There are many things I hate about Garmin watches (which I buy nevertheless), but I can forgive almost all of them except that one. I want my data to be bulk-exportable via open API, and not it some raw .fit format (because they have to comply with GDPR after all), but as a first-class feature, that tries to satisfy a customer by exporting any data it produces in any (realistic) format that customer wants. (I assume you are familiar with other wearables, since this is your domain, but just in case: GDPR forces them to make the data they record directly exportable, but they won't willingly do it for anything that is "processed data", so I can backup my HR history, but not the data they use to make these "sleep phases" graphs, and I can only manually export relatively useless .csv summaries for a given date.)

In short, I really want to stop giving my money to Garmin. But I don't want to compromise on quality of the data being recorded. What are your thoughts on that market?