Helicopter Pilot Headset Fixed Wing Pilot HeadsetData sheet /-//-//-//-//-/ UA2000H and UA2000F premium wired pilot headset enhancing your flying experience with all-day comfort and clear audio performance. Inbertec aviation headsets feature advanced PNR noise cancellation technology to detect ambient noise and cancel it out before it reaches the ear. The firmly and snugly ear cushions essentially create a seal around your ear that keeps unwanted noises out. UA2000H is for Helicopter use. UA2000F with Dual GA Plugs for Fixed Wing Aircraft use. Microphone Specification: Passive Noise Reduction Technology UA2000H/UA2000F utilizes passive noise reduction techniques to minimize the impact of external noise on the user's hearing. With a specialized earcup for noise-proof insulation, it's worked by mechanically blocking sound waves from entering the ear Noise-cancelling dynamic microphone to filter out background noise and ensure the pilot's voice to be transmitted clearly Comfortable leather ear cushions and head-pad and 216° rotatable microphone boom offering great comfortability and flexibility 7.1 mm jack plug (equivalent to U174/U) 5.2mm+6.35mm jack plug (equivalent to PJ-068 and PJ-055) Xiamen Inbertec Electronic Technology