Battery life is rated at 35 hours--impressive, given that is uses only a single AA battery.

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The Cord Free uses a AA battery that is sufficient to give it 25 hours of talk time and three months of standby power.

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The plastic devices run on one AA battery, weighs a little less than 3 ounces, and come in four colors: white, blue, orange and pink.

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Just 12.2mm slim (measurement excludes lens cover), which is smaller than the thickness of a standard AA-size battery, the Cyber-shot TX55 is the world's thinnest camera in its class (among cameras with an optical anti-shake function).

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The deadbolt is battery-powered using four AA cells that last more than a year with normal operation.

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With optional battery power operation (requires six AA batteries, not included), users can even take the IS9181 out of their home or office to the patio or backyard, as long as the Wi-Fi signal is in range for streaming.

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The Duo Gamer ships with two AA batteries instead of a built-in rechargeable battery.

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Battery cells, by the way, refer to products such as the conventional AA batteries inside a flash light.

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