It may not be an option for you based on your other tech choices, but I feel like the Apple Watch excels at all of the things you mention here except, obviously

It may not be an option for you based on your other tech choices, but I feel like the Apple Watch excels at all of the things you mention here except, obviously, battery life vs. a conventional nonsmart watch. I supposed UX can be a matter of taste, but I've found it's simple enough to set up an Apple Watch such that I have rapid access to the features and functions I need in a given situation. In particular, outdoor usage -- even in bright sun -- is pretty great. I've done no small amount of hiking with mine, and use it often when cycling. Readability is fine!