Fit something like this into a Nano and have it interface with my iPhone and we've got a sale...
I'm not sure if I was understanding right... is this device the phone itself or an extension of a phone?
I would love if the new Nano (or if they make an Android watch that can talk to iOS) used BT 4.0 to communicate between itself and my iPhone. I would need it as an extension of a bluetooth headset where I can plug in my headset, control my music that I have playing/stored on my iPhone (FFWD, REW, PLAY/PAUSE) and still carry the info on the screen, it should also extend the headset controls as a secondary control scheme, Email/Text message reader would be nice... but would only be able to be replied to using Siri and some good alarm features for the calender I have set on my iPhone.
That's my dream Nano Watch.