Wireless headset with Bluetooth connectivity and NFC support. USB charging only. - Brand: SONY - Model Name: WI-C400 - Connectivity: Bluetooth - Features: NFC support - Color: Black - Type: Wireless headset Purchased in August 2025, but I bought a different product after opening it because it was different from what I imagined. I am selling it because I don't use it. It has been stored in a cool, dark place, so there is no box discoloration. * The box was difficult to open, and the opening part is torn, but there is no problem with the product itself. Thank you for viewing. Price is firm due to included shipping. Shipping * Will be shipped in an OPP bag -> bubble wrap -> Rakuraku Takkyubin Compact.