While I see others wanted an iPhone on their wrist and tons of sensors... To each his own, that's fine, but for me personally, just need something like this-
IMO- Apple could have gone minimalist and much better design than Garmin with no battery worries. Other 'wearables' (eg heart monitor strap) sensors and Apps on my iPhone handle the rest. (And do not need/want the 'big' phone either)
Apple watch Nano...