1.aviation headset with large round PTT 2.with noise cancelling boom microphone 3.for two way radio SKYPE:karen-ying1   Two way radio walky talky heavy duty headset for Motorola GP320 and CP040  1, Noise cancelling boom microphone 2, High quality large round PTT button with 360 degree metal clip, PTT# 50 3, Ear cups with acoustic noise reduction material and comfortable gel ear pads 4, Behind the head metal band with overhead strap, idea for use with hard hats 5, Optional red PTT, mini XLR quick disconnected jack available 

Trans receiver heavy duty headset for Motorola GP320 and CP040