HomeProduct Global Trade Identification Number00021299147764, 00719040115079 00021299147764, 00719040115079 View cart “Koss Porta Professional Traditional On-Ear Headphones, Retro Type, 3.5mm Wired Plug, Sturdy, Black/Silver” has been added to your cart. Showing the single result Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Sort by editor review Added to wishlistRemoved from wishlist 0 Add to compare Sale! Audio & Television Koss Porta Professional Traditional On-Ear Headphones, Retro Type, 3.5mm Wired Plug, Sturdy, Black/Silver $49.99 Original price was: $49.99.$39.99Current price is: $39.99. Add to cart