2024 Challenge Touch Neck Speaker & Earphones DX It seems to support both the earphone jack and Bluetooth. It's convenient because it can be used with devices other than Challenge Touch. (It seems that Bluetooth connection may not be possible depending on the type of device.) Includes replacement ear caps, charging cable, and instruction manual. Opened, unused item. Please refrain from purchasing if you are sensitive to minor imperfections, as this is a personal inspection and storage. Since it is an unused item, the operation has not been confirmed. Thank you for your understanding. *Yu-Yu Mercari Mail ⇆ Raku-Raku Mercari Mail The shipping method may change depending on the day's circumstances.