With growth slowing in the $358 billion smartphone and tablet market, Apple and Samsung are said to be developing digital watches that allow users to make calls, check map coordinates, or monitor physical activity. They might want to talk to Sony, whose feature-laden Smart-Watch, on sale for more than a year, isn't exactly mesmerizing the masses. Priced at $130, Sony's 1.3-inch touchscreen watch wirelessly connects to Android smartphones using Bluetooth technology.
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