Bluetooth adapter compatible with TWS, with three mode switching functions. - Model Name: TWX II - Type: Bluetooth Adapter - Country of Manufacture: China - Features: TWS compatible, 3 mode switching - Brand Name: qdc - Retail Price: 19,800 yen Thank you for viewing. I am selling this because I was unable to use it with my qdc earphones when I tried to attach it. I considered returning it, but I couldn't because I had already opened the seal. It has never been used.