When I saw the price ($6) I was completely sold and ordered one right away. It has since become one of those things I never leave my house without and I have to say it's saved me in many situations!
It's cute, lightweight, tiny and wins - in my opinion - the award for best companion when you're on the go! One full charge will approximately give you two full charges on your device - in other words, keep this with you and you'll never have to experience the feeling of a dead phone ever again!
The Power Bank comes with a USB cable which you can plug into your pc/USB power adapter to charge. The LED light with turn from red to blue when the Power Bank is fully charged and voilà, you're ready to go!
You can get the Power Bank here for $6 in six different colors - so what are you waiting for?