Selling to clear out inventory. I purchased this used item on Mercari. It's a multi-driver earphone with a configuration of 4BA+2DD+1PZT. As expected of a multi-driver earphone, I think it's a good earphone with a sense of separation. You can also enjoy changes in sound by changing the included replacement nozzles. This is a 4.4mm plug specification. This is a used item. Please understand that there is a feeling of use, etc., before purchasing. The following is an automatically generated description: Marble-patterned earphones equipped with dual drivers. - Model Name: NX7 MK4 - Brand: NICE HCK - Included Case: Leather case - Design: Marble pattern - Driver Configuration: Dual driver Thank you for viewing.