Technical Details for Koss QZ PRO

Koss QZ PRO ... deliver the most exciting products possible.

PRODUCT FEATURES:

Frequency Response: 40-20,000 Hz;

Active Noise Reduction stereophone system;

Reduces harmful and annoying low frequency sounds in noisy environments;

Closed leatherette ear cushion for maximum isolation;

Collapsible design for portability;

Ideal for in-flight use;

Straight, single entry 4 foot cord.