This Murata Piezoelectric Waterproof Speaker is probably the same species as the paper thin speaker or the FleXpeaker speaker from Taiwan, it has an impressive thickness at 0.9mm only and Murata Piezoelectric is waterproof, too!
The model known as VSLBG1914E1400-T0 is designed exclusively for mini gadgets and portable gadgets such as digital camera, cell phone, or PMP so the device can produce a better sound output and highly water resistant. Guess what, this Murata Piezoelectric waterproof speaker is not just a concept anymore. You can actually found it selling for $2 a pop (250 yen) in Japan.
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