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

ENGADGET

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).

ENGADGET: Sony Cyber-shot TX55 packs 16.2-megapixel sensor, promises 'extremely low' noise in dim light

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

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

FORBES: Meet Duo Gamer: A Console-Style Game Controller For iPad, iPhone, iPod Touch