19 hours is not exceptional. At all. And the time it takes to charge is irrelevant if you're not in a place you can charge it.
Unlike your phone, it will require its own dock to charge. That means if you're stuck in an airport for 20 hours, your watch isn't getting charged. it means that this product is going to be a non-starter for many people who know they are frequently away from home base for more than a day.
The same does apply for other smartwatches too who have the same < 1 day battery life.
I was just recently on a european trip. My flight from Amsterdam to Copenhagen got cancelled. My phone battery died. I was stuck in the airport then running around amsterdam for an additional day with no hotel or home to plug anything in. My watch though, kept me going with the time. I never had to think about it. thats the purpose of a good quality watch. that and fashion.
neither the Apple watch is going to hit. This is going to put it into the same category as every other 1 day smart watch maker. Your average geek will wear it. but thats about it.
Shows how much you know, it will be a hit because that IS what Apple does, people like you said the iPhone would flop and it did not. people like you said the iPad was a bad idea and it was not, people like you said that netbooks would be here to stay and they did not.
People like you don't have a good track record really? I remember all of you saying how that when it was announced Apple had bought Authentec (the company that builds bio sensors) it would not work if added to the iPhone. Yeah and look how right you were.(end sarcasm)
99.9999% of Apple Watch users will NOT be globe trotting travellers who need a Watch that lasts for 50 days solid. Besides which if you think that you will maybe be the 0.0001% of users who may be in that situation then perhaps buy an old fashioned Watch as a backup, the same way people do who need extra power for long trips buy Battery Packs for their phones!