Slotted screws belong in the dustbin of history.
The screen to device size ratio isn't great.
The crown looks hideous, its going to jam into the back of your wrist at every opportunity, get seaweed collecting around it and if its supposed to be a control... well, its going to be hard to manipulate, especially if you have gloves on.
What's up with the handle thing on the left side?
More importantly, who is your target market? If you are looking for feedback you need to know roughly who you should be listening too. Otherwise you'll either end up building a Perdix (there might be a bit of a bias towards that here on SB!), or you'll end up building something that meets the needs of everyone, but no-one actually likes.
I have no idea how much of the market I might represent, but what I'm looking for is:
Durable.
Large clear screen (visible in sunlight)
Bluetooth
AA battery (rechargeable is nice, but I want to be able to swap out the battery if I've forgotten to charge it)
Wireless AI.
Lower price.
I don't particularly care about the algorithm, or about 'tech' features, if I ever end up doing that kind of diving I'll worry about that then.
I own a Sherwood Atmos Air, which (second hand) was the cheapest Wireless AI capable DC I was able to find.
PS, I work in product dev, so my feedback might be a little blunt.
Persona interviews and product market fit.