The headphone ear piece is a blob of "blue tack" painted black the head piece is thin resin core solder. and the wires are 2 strands of wire from a piece of connection wire that I stripped the plastic off, took 2 pieces of the thin wire and twisted them together and then pushed them into the "blue tack" ear pieces.
Glad you like them.

Oh by the way, the white wash is face paint that washes of or you can rub it off. Got a large bottle enough to do 60 tanks for $9.00.