I forgotten the coating, I must ask my bodymod. The magnets are grey.
I travelled to Germany ( bodymods like magnets,… are forbidden in Austria) and got the connections via Private Message. During the troubles n the UK, “my bodymod says also: who knows me, wil find me”
He implanted also the flexNT(2018 - same day , when I got the magnet) and the vivokeyflex (march 2019)