Just use the hand-crank for three minutes and get up to a half hour of talk time. Can't ask for any better tradeoff than that. Not only does this device charge your cell phone, it also works as a flashlight. The flashlight has four LED bulbs and has two different light modes: two bulb and four bulb mode.

This emergency phone charger kit comes with multiple adapters, so while you're waiting for an opportunity to save the world, you can perfect your heroic stance by saving your friends' phones.

Dimensions: 3 x 2 x 1 inches.