Equipped with productive receiver headset factory and company, Fenghuo Hongsheng is one of the leading China headsets aviation manufacturers and suppliers. Welcome to contact us. Model SZD-2 Receiver Headset is the voice communication terminal for the aircrew.it adopts the structure of binaural head ring; the product has obtained CTSOA (Serial Number: TSOA0034-XB-001) which is awarded by Civil Aviation Administration of China. It can replace the foreign products. It has the characteristics of comfortable for wearing, portability, clear voice, the stable performance and the high reliability.  Main Technical Specifications:    Operating temperature:-20℃～+55℃       Weight≤ 95g       Receiving mode: Moving-coil type       Receiving frequency range: 350Hz～3000Hz       Receiving impedance: 150(1±15%)Ω (1000Hz) Receiving sensitivity:(90±5)dB/mW(1000Hz)       Receiving total harmonic distortion≤10% (Receiving: 110dB, 350Hz～3000Hz)