Black wireless earphones with charging case, model GH-TWSN-8K. - Brand: GREEN HOUSE - Model: GH-TWSN-8K - Color: Black - Type: Wireless Earphones - Accessories: Charging Case Thank you for viewing. I purchased these at a local home improvement store for about 1500 yen, but I'm selling them because the sound quality doesn't suit my taste. I've used them a few times. There are no operational issues. I have disinfected them with alcohol, but if you are concerned, please use the spare ear tips. Please consider purchasing, understanding that these are used items.