>>Can anyone identify what this F/O is wearing on his face? Is it the oxygen mask? It looks strange, and is too low to be his sunglasses, which I can identify...any help?
The F/O in the picture is wearing an ear piece. It's a molded piece that fits your ear and plug's into the minitell boom mic. These ear pieces are used by at least 95% of the transport pilots here in the U.S.. Not strange at all.