There are many problems to be solved in health monitoring and sleep- and fitness-tracking. And there is a real market for fitness bands, even if it's not a huge

There are many problems to be solved in health monitoring and sleep- and fitness-tracking. And there is a real market for fitness bands, even if it's not a huge one. There's also a designer watch/fashion market, which is the one that seems to be of more interest to Apple. However, it doesn't appear to be winning in that one. The current Apple Watch market appears to be "geeks with iPhones who live in Silicon Valley, or wannabees". How is it doing there?