Given an English language product review, determine if it is a Good Review or a Bad Review. A good review is one where the product's review has positive tone and Bad review is one where the tone of product's review is negative.

I purchased this to charge my iphone. It can fully back the phone three times with one charge. It's good for emergencies or when your batteries can't cut it. In that aspect, it serves its purpose. However, be advised these units are not exactly water resistant. They cannot even resist splashes of water. For those reasons, I'd recommend getting them water-resistant and charging only while outside. Otherwise, it's a handy device especially in long trips where you might run out of juice before plugging in.
Good Review