The Original American Stereophone Company ,Ever since we invented the world's first SP/3 stereophone back in 1958, Koss Stereophones have been bringing back the excitement of a live performance. Music lovers around the world recognize that dedication to accuracy in sound reproduction as The Sound of Koss. , ,THE SOUND OF KOSS ,- High-Resolution dynamic audio driver , ,SHARE YOUR CONTENT ,- Dual choice entry enables pass through daisy chaining , ,STAY CONNECTED ,- Detachable cord with one-touch microphone & remote , ,Over-Ear Headphones - with Built-in Audio Splitter , ,KEY FEATURES: ,- Full size, over-ear headphones ,- D-profile ,- Detachable cord with microphone & remote ,- Dual choice entry ,- Fold flat for travel ,- Available in dark grey or white ,- Covered under the Koss Stereophones Limited Lifetime Warranty ,- 20-20,000 Hz ,- 35 Ohms ,- 100 dB SPL ,- 4 foot