This is the headpiece Haqua du Lot Herminium from Kami nomi zo Shiru Sekai (The World God Only Knows) wears. It is used to detect loose souls in the vicinity around her. Please comment if you want the sound of the sensor going off. Haqua is my favorite character so that's why I made it. Sorry about parts of the skull geting cut off from the circle. I didn't know that it gets cut out from the actual model.