QOA Cloudscape 4.4mm. + NiceHCK WhiteSky 4.4mm 2pin 1DD + Box-type planar magnetic driver The QOA Mimosa and dynamic drivers are the same, with the planar magnetic driver improved to upgrade the high frequencies. Purchased in July of this year. Used indoors for a few hours. No operational problems, no scratches or dirt, and it's almost new with no signs of use. All accessories included. Eartips are unused.