The ATH-CKS99i were made for compatible Apple devices.
"i" versions will work with Android devices, BUT WILL HAVE LIMITED FUNCTIONALITY. The Microphone will NOT work with a PC or Mac. Please see the below for additional details.
The nomenclature for A-T headphones with microphones is as follows:
â€˘ â€śiâ€ť = for iPhone (e.g. ATH-CK99i)
o Has push-button Volume Control, and center-button for play/pause â€“ answer/hang-up
â€˘ â€śiS = for all other compatible Smartphones (e.g. ATH-CKX9iS)
o Has center-button only, for play/pause â€“ answer/hang-up
o Also features a volume-slider for volume-control.
The Audio-Technica Headphones with Microphones that are listed as "i"-versions (NOT the iS-versions) will accomplish the following with compatible Apple devices, namely the iPhone and iPad:
â€˘ Feature an In-Line three-button remote that provides the ability to
o Control Volume (music playback function)
o Play (music playback function)
o Pause (music playback function)
o Fast-Forward (music playback function)
o Rewind (music playback function)
o Answer/Hang-Up Phone Calls
If you have any further questions, please contact the Audio-Technica United States (ATUS) Audio Solutions Team at firstname.lastname@example.org