Those automatic quartz watches seem to top out in the single digit microamp range.
Just spinning up a BTLE chip to receive a message takes far more than that (orders of magnitude), and without some sort of BT connection to your phone, the watch ceases to be smart.
Perhaps I wasn't clear enough. I'm not saying a Seiko mechanism is going to power any kind of smartdevice functions (although you might combo a tiny backup quartz mechanism so that when your smartwatch dies it can still tell time). What I am saying is that the problem with all these smartwatches getting shit battery life is just in their design. The Pebble, to it's credit, gets a more than adequate 4+ days of battery life because they were smart and used a microcontroller.
