Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Versatile and fills my needs

I was looking for two things and found both in one with a flashlight thrown in. First I needed a battery case to carry an extra 4 AAs for the hand-held amateur radio I commute with. This device only gets 4 stars because it isn't waterproof, but an Aloksak solves that. The other thing I was looking for was AA backup for my cell phone. This device will charge my LG cell phone, as well as my Sony Walkman MP3 player. And a bright, even, LED flashlight backup is a bonus. It saved me money, and saves me space and weight. I'm happy.