The Koss Porta Pro® Communication Headset features a flexible, hands-free microphone and connects to devices through a simple 3.5mm TRRS plug.
Koss made a Porta Pro headset : r/headphones
A Portable headphone is a headphone that is used on-the-go. Portable headphones tend to be smaller, more lightweight, and may have features that lend themselves to listening on-the-go, like carrying cases or collapsible headbands.
Koss Porta Pro Black on Ear Headphones with Case Black
Supreme Koss PortaPro Headphones Silver - FW23 - US
Koss Porta Pro Limited Edition review - SoundGuys
Koss Porta Pro Limited Edition 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
Koss Porta Pro Wireless Review — STOZZ AUDIO
Supreme Koss PortaPro Headphones White - US
Koss Porta Pro Classic Headphones Black
Koss Porta Pro, Wireless Mod
This makes it perfect for audiophile enthusiasts and those looking to assemble their own personalized, custom headphones. With its strong playability
Upgrade Premium Metal Headband For KOSS Porta Pro KSC35 KSC75 KSC55 Headphone
Koss Porta Pro KTC Ultimate Portable Headphone for iPod, iPhone and iPad
KOSS Porta Pro Wireless Bluetooth-enabled Dynamic Open Headphone black
