OWL-UD/MD is a helmet-mounted, compact and ruggedized display unit. Used in combination with universal thermal tactical sight or our OWL-M sight series, it serves as a secondary display unit, enabling users to see images obtained from the sight while remaining in a safe position (not being exposed to enemy fire).
OWL-UD can be adjusted to connect to various sight devices available in the market which have external video output, whereas OWL-MD is an optional accessory to our OWL-M sight series.
See full Brochure
http://securityast.net/owlmd.pdf