Hybrid Electronic Active Noise Cancellation aviation headsets, Digital Signal Processing, needs to be FAA TSO-C139a Approved, must be under 13 oz in weight without cord, must be collapsible, must have a reverse boom option, in-line control module with backlit, touch-key user interface controls, over-the-ear leatherette ear seals IOT fit snug, must have M-5B electret microphone, Stereo/mono switch for panel configurations, Bluetooth wireless technology to connect to all smart devices. Needs to be super comfortable, lightweight, and fold up very small.