Mutual Converters - One cable turns a 3.5mm combo headphone / microphone port into two different ports, and another converts two 3.5mm plugs into a single 3.5mm smartphone plug.Wide application - make your PC headset on Android, Windows and other smartphones, tablets. And make your single-plug headphones applied to PC, notebook.Enjoy great sound quality - Allows you to use a higher quality headset with your smartphone. Well-made braided wires provide great audio transmission.Compact design for maximum portability - a great solution to have in your laptop bag. Plug and play, regardless of whether it is a single or double plug, your headphones will work on your device.This adapter is not a headphone splitter / Y-cable (note: it is a splitter, not a combiner). It cannot be used to split the audio output between two separate headphones or speakers.Expand your application of your headphonesWith this adapter cable, just one headphone, you can use it on all of your 3.5 mm jack devicesRegardless of whether you have a 3.5 mm plug headset / headphones with 4 positions or a 3.5 mm double socket for microphone and audio headset, you will find a useful adapter cable in the kit.Allow you to attach your high quality headphones with two jacks to your smartphone / tablet.Get the kit in your laptop bag and convert your cellphone headphones to your laptop / PC at any time, which is very convenient.Package content:1 x 3.5mm 4-position jack to 3.5mm microphone and audio plug adapter1 x 3.5 mm mic and audio jack to position 4 3.5 mm male to female adapter