For ICOM ICV82 or ICV80 or ICV8 Aviation Pilot Headphone Walkie Talkie Headset with U94 PTT Adapter Quality sound: The aviation headset with 24dB NRR (Noise Reduction Rating),clear Hear 50mm performance speakers Comfortable to wear: With foam ear pads,stainless steel headband and deep pocket ear canals,student pilots and flight instructors will enjoy the all day comfort Clear communication: Clear and reliable communication between crew,instructors,and the tower is critical to your flight and enjoyment Clear sound: Always be heard with the new designed EM56 noise reflective cup microphone and foam wind block mic muff Electronic noise reduction: With electronic active noise reduction and sound collection technology,this earphone provides clearer,natural sound and protection for your ears Chip protection: This headset chip is well protected by the film layer,can provide a higher defense against mold,dust and moisture Highstrength material: The plug cable is made of Kraft cable and TEP cover. It has stretch,strength and frost resistance,and is not easy to age and hard Durable headband: The headband is made of the first layer of cowhide,not easy to deform and weak Specifications: NRR: 24db Impedance: 150 ohms or mono Freq: Range 1001700Hz Sensitivity: 101db with 1mW input Volume control attenuation: 23db Microphone type: Electret noise canceling mic Freq response: 3008,000Hz Mic source resistance: 2202200 ohms Compatible with: ICOM ICV82 Package included: 1 x U94 PTT Headset Adapter 1 x Headset