Ear Plug Fit Test System, Frequencies Tested 125 Hz, 250 Hz, 500 Hz, 1,000 Hz, 2,000 Hz, 4,000 Hz, 8,000 Hz, Frequency Range 125 to 8000 Hz, Series E-A-Rfit, For Use With Banded Hearing Protectors, Ear Muffs, Ear Plugs, System Requirements Probed Test Plugs, Pods, or Cushions, Features Dual Element, Dual Microphones, Includes Impact Carrying Case, Software, Speaker