This is the 60 BP Model NOT The 60 B model. All of the electronics, earseals and other components have been upgraded. The 60 B and all other Flight Line headsets have been is discontinued! I recommend this headset to all my students.
ANF - Amplified Noise Filter Circuit.
Dedicated Switch for Stero or Mono Operation
Dual Volume Controls
Noise Cancelling Electret Microphone with Windscreen