Ground Support Headset Data sheet Inbertec UA1200G PNR noise reduction ground support headset for communication between airport ground crews and aircraft interphone system. With amplified M-1/DC dynamic noise cancelling microphone, momentary PTT(Push-to-Talk) switch and Passive Noise Reduction Rating(NRR):25dB, UA1200G helps provide clear, concise ground crew communications and reliable hearing protection during ground support operations. 6.35mm jack plug (equivalent to PJ-051) TECHNICAL DATA Ultra-lightweight Carbon fiber material provides the extreme lightweight PNR Noise Reduction Technology UA1200G utilizes passive noise reduction techniques to minimize the impact of external noise on the user's hearing. With specialized earcups for noise-proof insulation, it's worked by mechanically blocking sound waves from entering the ear Noise Cancelling Microphone M-1/DC amplified dynamic noise cancelling microphone PTT(Push-to-Talk) Switch Momentary PTT(Push-to-Talk)switch for convenient communication Comfortability and Flexibility Comfortable leather ear cushions and shock absorption head-pad and 246° rotatable microphone boom offering great comfortability and flexibility Connectors 6.35mm jack plug (equivalent to PJ-051) Xiamen Inbertec Electronic Technology Co