ienza® Slim Ultra-Compact Mini-jack Headset Audio Jack 3.5-inch Extender; Headphone Adapter for Battery Charger Case, Power Case, Juice Pack for Latest iPhone and Android Smartphones and Tablets; 4-Pole 3.5mm Male to 3.5mm Female Extension Cable

worked perfect for my iphone to hook up to the speaker in our cooler only problem is our speaker on my phone is louder than the ones in the cooler so time to shop for a new cooler

I've had it for less than 2 weeks and it's already broken/cutting out. Complete waste of money.

Just what I needed for using my square for credit card purchases with my phone without taking my phone protector off.

like all these adapters, they only last a few weeks at best before they short out, the audio starts crapping out, and your phone thinks the shorts are electronic commands to fast forward music. If you are looking for something that will last 2 weeks of heavy use and no more, this one is for you. Me, I like things a little more durable.

i bought this as a secondary adapter for an Anker iPhone 5S battery case. It is not slim enough. It can be made to fit by cutting and tearing away some of the rubber casing around the jack.

Must buy if you use a Mophie Juicebox and want to plug a head set in.

This adapter does not fit through the audio opening in the Maxboost cellphone case.

The media could not be loaded.  good product works well and what i needed what the video