The best...gadgets for your smartphone

nPower Peg

This charger stores the kinetic energy you create while walking. In theory, you’ll never again be helpless when your phone’s power is withering and there’s no outlet in sight.

$160, npowerpeg.com

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Source: Wall Street Journal

GoPoint Technology GL1

Save yourself a trip to the mechanic with this do-it-yourself diagnostic tool. The cable plugs into your car’s computer and turns an iPhone into “a window” on all details of the engine’s operation.

$100, gopointtech.com

Source: Popular Mechanics

Verbatim Bluetooth Mobile Keyboard

This foldable keyboard offers an easy way to type up long e-mails on your phone. A few handy control keys also let you “tend to your music” simultaneously.

$80, amazon.com

Source: Mashable.com

RedEye Mini

Among the devices that turn an iPhone into a universal remote, this 2-inch dongle “stands out from the crowd.” Just plug it in, load the app, and say good-bye to coffee-table clutter.

$49, thinkflood.com

Source: USA Today

Lark

“Enough with blaring alarm clocks.” When synced with the clock on your iPhone, this bracelet will wake you by sending silent vibrations to a pressure point on your inner wrist.

$100, ourlark.com

Source: Popular Science