I had previously blogged about the Zaku II head speaker and it's Gundam time to go groovy with stereo speaker powered by two AA-sized batteries. More sophisticated mechanics were introduced to Gundam RX-78-2 head as the sides unfold to reveal the the speakers. On the other hand, the cable runs from the back of the head that connects to any earphone inlets, could not be hidden or concealed. IMHO, this item carries more as novelty rather than a gadget.
In actual fact, the speaker can't really amplify much sound and starts cranking when you try too hard. On the other hand, it sets in perfect in my Gundam theme decorated room. Looks even more awesome when I put Amuro Ray's trading figure (not included), the protagonist of Kidou Senshi Gundam. Anyway, I bought this from Japan at the flea market at Akihabara. It was manned to be a prized item for UFO catcher manufactured by Banpresto back then when Bluetooth was still at infant stage.