I forget that birds have no fingers.
Plastic housings - the one FAD bud that was plastic that I heard sounded absolutely dreck - much worse than even the other two I tried. The most novelly disturbing sound I've heard.
These are probably just the new V BAs by Molex in a plastic housing. Heck maybe plastic will be the saving grace and in reality the tin foil they've been using on the FADs were really limiting them from their full potential or maybe I'm just talking out of my buttcrack.
It's too cheap to be the Heaven V - probably heaven IV or even II.