Third Rail Trio Battery Case for iPhone 4/4S

Got this Third Rail Trio battery case system for the iPhone 4 and 4S. It's a pretty cool setup because it comes with a slim protective case and a detachable battery pack so you don't have to carry the extra weight when you don't need it. The box says it works as a universal charger for other stuff too. Box has a little wear but everything looks solid inside. Perfect if you're still rocking one of these classic iPhones or just want it for the collection.