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Due to its unusual configuration
Built-in amplifier for stronger transmit and receive audio
Serials 172S8001+
000 flight hours in 260 types of aircraft
Movement: Japanese quartz movement
David Clark H6740-51 IS Headset Microphone – BTH with Drilled Dome (40416G-51) PA-92.5 Due to its unusual configurationDavid Clark H6740 51 IS Headset Microphone Behind the Head, Intrinsically Safe (40416G 51) Overview The David Clark H6740 51 IS Headset Microphone (40416G 51) is a rugged, behind the head headset designed for use in high noise and hazardous environments. Featuring an Intrinsically Safe (IS) build, this headset ensures reliable and safe communication for professionals working in volatile or explosive atmospheres. Key Features Intrinsically Safe (IS):
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