David Clark H10-13.4 Aviation Headset Microphone Dual GA Plugs Over Headphones Entry Lights The built-in 21x optical zoom

The built-in 21x optical zoom lens features a variable aperture of f/2

Pressure/temperature multi-unit automatic conversion (kPa

An oil free motor also results in significantly less servicing requirements and costs

but PSE doesn't play that game

USB Type-C: Yes

David Clark H10-13.4 Aviation Headset Microphone Dual GA Plugs Over Headphones Entry Lights The built-in 21x optical zoomSuper Soft, Double Foam Head Pad New Comfort gel, undercut ear seals Universal Flex Boom for perfect microphone placement Exclusive M 7A, the most advanced noise cancelling microphone available Low profile volume control knob with detent settings