So, here's what I've found from their teaser video. Eunhyuk was wearing a heart shaped brooch from KTZ.
I found it still available on one Japanese fashion site here for 38,000 JPY.
And about his earrings.
He didn't wear any ear studs for SJM promotion, I should have corrected that :| his ear studs are drawn. LMAO~ What can we expect from a rapper who afraid of needles?