![Amazon.com: Koss BT539iK Wireless Bluetooth Over-Ear Headphones,On-Board Microphone and Touch Controls, Detachable Cord Included, Dark Grey and Black : Electronics Amazon.com: Koss BT539iK Wireless Bluetooth Over-Ear Headphones,On-Board Microphone and Touch Controls, Detachable Cord Included, Dark Grey and Black : Electronics](https://m.media-amazon.com/images/I/416pHioTm9L._AC_UF894,1000_QL80_.jpg)
Amazon.com: Koss BT539iK Wireless Bluetooth Over-Ear Headphones,On-Board Microphone and Touch Controls, Detachable Cord Included, Dark Grey and Black : Electronics
![Amazon.com: Koss KPH7 Wireless Bluetooth On-Ear Headphones, On-Board Controls with Microphone, Lightweight Portable Fold Flat Design for Compact Storage, Black : Electronics Amazon.com: Koss KPH7 Wireless Bluetooth On-Ear Headphones, On-Board Controls with Microphone, Lightweight Portable Fold Flat Design for Compact Storage, Black : Electronics](https://m.media-amazon.com/images/I/61QDNuuRaoL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Koss KPH7 Wireless Bluetooth On-Ear Headphones, On-Board Controls with Microphone, Lightweight Portable Fold Flat Design for Compact Storage, Black : Electronics
![Amazon.com: Koss Porta Pro Limited Edition Black Gold On-Ear Headphones, in-Line Microphone, Volume Control and Touch Remote Control, Includes Hard Carrying Case, Wired with 3.5mm Plug, Black and Gold : Electronics Amazon.com: Koss Porta Pro Limited Edition Black Gold On-Ear Headphones, in-Line Microphone, Volume Control and Touch Remote Control, Includes Hard Carrying Case, Wired with 3.5mm Plug, Black and Gold : Electronics](https://m.media-amazon.com/images/I/61VWki57RqL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Koss Porta Pro Limited Edition Black Gold On-Ear Headphones, in-Line Microphone, Volume Control and Touch Remote Control, Includes Hard Carrying Case, Wired with 3.5mm Plug, Black and Gold : Electronics
![Amazon.com: Koss Porta Pro Limited Edition Rhythm Beige On-Ear Headphones, in-Line Microphone, Volume Control and Touch Remote Control, Retro Style, Includes Hard Carry Case, Wired with 3.5mm Plug, Rhythm Beige : Electronics Amazon.com: Koss Porta Pro Limited Edition Rhythm Beige On-Ear Headphones, in-Line Microphone, Volume Control and Touch Remote Control, Retro Style, Includes Hard Carry Case, Wired with 3.5mm Plug, Rhythm Beige : Electronics](https://m.media-amazon.com/images/I/61axmdZG97L._AC_UF894,1000_QL80_.jpg)