Murata has created the world's first waterproof, ultra-thin piezoelectric speaker for installation into mobile devices
Waterproofing mobile devices such as phones, MP3 players and cameras is becoming ever more common. But devices sporting little holes to let the sound out pose a bit of a leakage problem. Rather than potentially reduce sound quality by covering them up, Murata has produced a tiny piezoelectric speaker which is itself waterproof.
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