Re: Still need that "killer app" ?
"The unique feature a watch provides is the time and date. Instantly. Fusslessly."
Arguably, a mobile phone's unique feature was the ability to make telephone calls remotely. Instantly. Fusslessly is debateable.
The big killer app was ...er... the app, actually. Suddenly the smartphone became something that the cell phone was not. Calling a smartphone a phone is almost ludicrous, as they're pocket computers more than anything else.
The reason why everyone in manufacturing jumped onto the watch platform is because they didn't want to miss out on the prize if it became as important as the smartphone did. It didn't, mind you, so they all have dropped back out again. There's still a bunch of niches available, from sports-tracking devices, handy GPS reference for golfers who want to know exactly how far they hit/need to keep hitting, diving computers, and so forth. What we're all waiting for is something that takes the smartwatch out of the category of niche and blows it into "basically everyone on the planet will want one" like smartphones did.
Hasn't happened yet. If I knew the answer, I'd probably be a very rich man--or more likely, complaining and irritable when someone with more means gets the same idea and gets there first. But then, manufacturers can't do basic things like include reasonable pockets in women's jeans despite demand, so maybe there's hope yet.