The throat mike removes extra microphone noises while the in-ear speaker bud provides clear, crisp audio.

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With The Fly, for example, users can draw a calculator and then touch the numbers to trigger a calculation heard through a speaker or ear phones.

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Now when he gets a call Prideaux can either hold the prosthetic arm up to his ear, put it on speaker phone, or take it out if need be.

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This includes the single speaker that doubles as the ear piece, located above the screen.

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Jawbone, the privately held maker of the Jambox mobile speaker and those in-ear Bluetooth headsets beautiful enough to be in the Museum of Modern Art, is making big moves lately.

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