Selling because I'm replacing them after about a year of use. The size S ear tips were used, so I've discarded them. I will thoroughly disinfect them with alcohol before listing. Operation has been confirmed, and the battery is also fine. Please refrain from purchasing if you are sensitive to used items. The WF-1000XM5 features high-quality noise canceling and supports 360 Reality Audio. - Brand: SONY - Model Name: WF-1000XM5 - Features: High-Quality Noise Canceling - Audio Features: 360 Reality Audio - Accessories: USB cable, ear tips (SS, L), box, instruction manual - Series: 1000X Series Thank you for considering.