Koss PortaPro Stereo Headphones Visual Departures GT-1111 The green battery technology dramatically

The green battery technology dramatically reduces costs of ownership and hassles while reducing the number of batteries in landfills

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This is an inner thread (outer nut) adapter that will connect to any of our wireless boards or interface cables and allow you to use an antenna/cable that has an outer thread configuration

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Koss PortaPro Stereo Headphones Visual Departures GT-1111 The green battery technology dramaticallyVintage Design Mylar Diaphragms NdFeB Magnet Structures OFC Voice Coils Foam Earpads Includes Carrying Case Lifetime Warranty The PortaPro stereo headphones from Koss provide high quality audio in a vintage design. Unchanged since 1984, the PortaPro offers a unique and recognizable look with performance to match. The headphones use rigid Mylar drivers to minimize distortion and provide accurate reproduction, while NdFeB magnet structures deliver