I stored this at home after using it a few times. The included black pads are unused. (I was using separately sold pads. Even unused, there might be some deterioration.) Operation has been confirmed (Bluetooth connection, charging, and sound output all work perfectly). The dedicated hard case is the same as the "Koss Porta Pro Official Hard Carry Case (around 4000 yen)" sold on Amazon. Please check the detailed condition in the photos. 【Product Description】 This is the Bluetooth wireless model of the long-loved classic "Porta Pro." It's lightweight and comfortable to wear with its unique fit, and features natural, expansive sound quality unique to open-ear headphones. It is equipped with a cable remote control microphone, allowing for smooth calls and volume adjustment. The foldable design makes it convenient to carry. 【Accessories】 Outer box, inner box, dedicated hard case, USB charging cable, instruction manual set 【Shipping Method】 Delivered by Takkyubin (Japanese courier service) *Cardboard boxes may be reused. 【Regarding Purchase】 ・We do not accept price negotiations. (If a price negotiation is requested even though it's stated, the price will be temporarily increased.) ・Please consider only if you understand that this is a used item. ・Returns and exchanges are not accepted to prevent product substitution.