Can you pair an iPod Nano w/ Bluetooth to an iPhone?

Is it possible to sink an iPod Nano (with a Bluetooth adapter) to an iPhone? Lets say, for example, I have my Nano on a wrist watch and I have my headphones pluged into it, could I have my Nano Paired to my iPhone so I could see an incoming call on my nano and answer it using the attached headphones instead of switching to my iPhone? If not is it possible for an update to add the ability in the future?