The Sound of Koss - New Colorway, same classic Porta Pro sound, Great Retro Look
Stay Connected - Take calls and control your music with the in-line microphone, remote & attenuating volume control
Perfect Portability - Porta Pro Limited Edition includes a branded hard-shell case for easy transport
Collapsible Design - The ultimate portable headphones with a collapsible headband design for protective storage
Limited Lifetime Warranty