This is the charging case for the Sony WF-1000XM4 in platinum silver. I have confirmed the opening/closing, power, and charging functions. There are scratches and other signs of normal use on the exterior, but it is in good working condition without any problems. Recommended for those who have the earphones but have lost or damaged the case. Please consider with confidence! Also, since this is a used item, please understand that it is non-refundable and non-returnable.