Wireless headphones boasting 35 hours of battery life. - Brand: SONY - Model: WH-CH510 - Color: Black - Battery Life: 35 hours - Amazon Purchase Price: 4,900 yen (New, 2021) (For reference) Current Amazon Used Price: 3,680 yen Thank you for viewing. I was using these occasionally around my home PC until recently. There are no noticeable scratches or stains, and the sound quality is also very clear. Includes box, instruction manual (partially torn), and USB Type-C charging cable. I am selling these due to a PC upgrade. Please understand that these are used items and purchase them on a no-claims, no-returns basis.