[Q] Bluetooth headset? topic

I've already got the logitech bluetooth case / keyboard,

My question is, can i hook up a bluetooth earpiece as well to recieve calls? Would look a bit silly putting a 10.5" tablet to my ear.

More importantly, would i be able to answer calls via an earpiece whilst the logitech case is closed?

Google search doesn't offer up much.

Many thanks! :)