• Reduces harmful and annoying low frequency sounds in noisy environments
  
• Specialty ear cushion material forms slowly in ear canal providing a custom fit and maximum isolation
• Dynamic stereophone element for extended frequency response (10 - 20,000Hz)
• Compact design for convenient travel and portability
• Ideal for in-flight use

Koss QZ-77 Active Noise Reduction Ear Plug System

Color Silver
Size one size
Item dimensions L x W x H 25 x 25 x 25 millimeters