Headphones become a battery

This isn't another case of identity crisis, it's just that the B-headphones transform to AA batteries! What I'm telling you here is that these headphones come in 3 pieces: two earbuds and a housing case. Plug the two earbuds on both the ends of the housing - and pesto! you got yourself an AA battery. Now put that battery into the main charging station and recharge the Bluetooth buds! A telltale light indicator lets you know when they are juiced up so that you can pop them out and use them again

Source: yankodesign.comAdded: 10 March 2009