Casio shows Bluetooth Low Energy watch prototype, awaits Bluetooth Low Energy phones

Engadget: Sony Ericsson, Citizen, and others have been taking occasional shots at integrating Bluetooth into wrist-bound baubles for several years now, but the problems have been pretty obvious -- Bluetooth wasn't really optimized to transfer nibble-sized chunks of information while sipping almost imperceptible amounts of power, so you end up with a watch that dies in hours or days rather than years.

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