Wireless earbuds offering a 360-degree sound experience. The main unit provides 20 hours of use, and the case provides an additional 30 hours. These earbuds have physical buttons, which are rare nowadays, and allow you to turn them on and off without the case. This was very convenient, as I could go out with just the earbuds. There are some minor scratches, but no noticeable damage. I don't feel any battery degradation. Please refrain from purchasing if you are overly concerned about the condition, as there may be subjective evaluations of the condition and some minor dirt that cannot be completely removed. Please purchase only if you understand that this is a used item. I will clean the item before shipping, and it will be sent via Rakuraku Mercari delivery. No claims or returns are accepted to prevent product substitution. - Brand: audio-technica - Model Name: ATH-CKS50TW - Features: Wireless Earbuds - Color: Black - Accessories: Box, charging case, instruction manual, replacement earpieces