The Aux Link is a simple solution to an emerging problem. Most companies are removing the headphone jack from their devices, leaving their customers with the burden of keeping track of the provided adapter. Our product features a 3.5mm or 1/8" male jack connected to a keyring apparatus. This straightforward design makes it easy to attach our product to many of your personal items, such as backpacks, keychains, purses, and more! The Aux Link is compatible with any female 3.5mm or 1/8" jack. This means our product is compatible with the Apple iPhone 7, 8, or X, Xs, Xs Max, Xr, 11, 12 headphone adapter, the Samsung, or HTC USB-C headphone adapter, a 1/4" adapter for professional headphones, or many other similar items.