Passive Noise Reduction Headphones QZ99 cat_other and reliable performance

and reliable performance

clear sound to an entire room

5 mm stereo plug — compatible with standard jacks

Smart-Trek™ Deluxe Stereo Headset — 3

Passive Noise Reduction Headphones QZ99 cat_other and reliable performanceThe QZ99 Passive Noise Reduction headphones sport neodymium magnet structures that deliver outstanding clarity and definition. The closed Pneumalite ear cushions and extra secure headband create a tight seal around the ear eliminating all ambient noise. Durable and built to withstand the rigors of indoor and outdoor use, the Koss QZ99 also includes a volume control on the ear cup that makes adjusting sound levels a snap, and a stereo mono switch that