Thank you for viewing. Product Details ・Amazon.co.jp Limited Color Sennheiser Momentum True Wireless 4 (Black Copper) ・Silicone case cover *Purchased separately/Other company's product ◎Complete with all accessories All included earpieces, including the ones initially attached, are unused. (They are in the included paper case.) The included ear fins are also unused and unopened, except for the ones initially attached (the ones attached in the product photos). (They are in the included paper case.) ◎Operation confirmed I purchased this two months ago and used it indoors for a while, but I am selling it because I no longer plan to use it. I used it with the charging setting controlled by the app to prevent full charging, so I believe there is little deterioration. (The total number of charging cycles is about 5 times.) There is no feeling of use and no scratches. I am selling it with a silicone cover case purchased at the same time. (If you don't need it, please dispose of it yourself after receiving the product.) After cleaning, I will carefully pack it and ship it via Rakuraku Mercari. *To prevent transactionトラブル, we do not accept returns after purchase. Please understand this beforehand. *This is only a personal inspection and storage. We do not recommend purchase for those who are sensitive to details. *Regarding product warranty, even if it is within the period, we cannot provide information such as purchase information to protect the seller's personal information. If you wish, please handle it yourself with the manufacturer or retailer after purchase. (The buyer assumes no responsibility) #Sennheiser #sennheiser Other features...Noise canceling