Thank you for viewing. I'm selling this because I'm organizing my equipment, even though I've used it for about six months. It shows some signs of use, but I think it's in good condition. The seller is a non-smoker and does not own any pets. ★ Operation confirmed (no issues with the left and right units, or the cables) ★ Accessories (T-ear tips S, black ear tips S/M/L, foam ear tips, replacement plugs 2.5mm/3.5mm/4.4mm) Immediate purchase and price negotiation within a reasonable range are possible. ※ The replacement filters show some signs of use, and the red nozzle filter did not have a metal filter from the time of purchase. Also, the included T-ear tips size S have been used and show some signs of wear. Please understand the above points before purchasing. Thank you. I can also answer questions about sound quality and handling. New price on Amazon at the time of listing: 3650 yen