Yes, it surprised me too. I've got that written on a number of watches that I never wear anymore.
I thought it would be really annoying - who wants to worry about charging a watch, right?
I was wrong. I've never really noticed it - I never have liked sleeping with a watch, so dropping in on the charger was roughly the same as what I was doing anyway.
I travel a reasonable amount, and remembering the custom charger is the only real annoyance I've found with it.
I'm old enough to remember when phones went weeks between charges. I guess we can adapt pretty easily.
I'm surprised that they can sell 2 days battery as a feature and have people swallow it.
What's written behind my watch: "10 year battery life".