![Amazon.com: Koss BT190iK Wireless Bluetooth Earbuds | in-line Microphone & Touch Controls | Sweat Resistant | Three Cushion Sizes Included | 6 Hour Battery Life | Light Weight | Black : Electronics Amazon.com: Koss BT190iK Wireless Bluetooth Earbuds | in-line Microphone & Touch Controls | Sweat Resistant | Three Cushion Sizes Included | 6 Hour Battery Life | Light Weight | Black : Electronics](https://m.media-amazon.com/images/I/61Fb5jP9YAL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Koss BT190iK Wireless Bluetooth Earbuds | in-line Microphone & Touch Controls | Sweat Resistant | Three Cushion Sizes Included | 6 Hour Battery Life | Light Weight | 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 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 Porta Pro with Microphone and Remote On-Ear Headphones, in-Line Microphone and Touch Remote Control, Collapsible Design, Wired with 3.5mm Plug, Black and Silver : Electronics Amazon.com: Koss Porta Pro with Microphone and Remote On-Ear Headphones, in-Line Microphone and Touch Remote Control, Collapsible Design, Wired with 3.5mm Plug, Black and Silver : Electronics](https://m.media-amazon.com/images/I/61gLnFYbpvL._AC_UF1000,1000_QL80_.jpg)