Thank you for visiting! ・Contents As shown in the photos. Please note that items not shown in the photos (such as connection cables) are not included. The model number of this product is unknown. Please understand that we cannot accept returns for reasons such as the model number being different from what you expected or not being able to use it. There is a description of TUNE FLEX on the case, but it seems that it is not TUNE FLEX. I don't know, so I'm listing it as unknown. Also, this is an earphone case (charging case) only. Please note that the earphone本体 is not included. I received a large quantity, but I don't use them myself, so I will sell them to those who need them. *The colors seen in the photos may differ slightly from the actual colors due to the way the photos are taken, so if you are concerned about the color, please check the manufacturer's website. ・Condition of the product There are no major scratches or stains on the outside, but due to the skeleton structure, there are some dust and stains that have gotten inside and cannot be removed. This is a used item, so please understand that there may be some scratches and stains that are not mentioned. Please refrain from purchasing if you are looking for a product in new condition or if you are concerned about minor scratches or stains. No claims and no returns. The battery life is not guaranteed as it is a used item. Please check the charging method of the charging case (type-B, type-C, etc.) in the photos. ・Product cleaning/operation check Each product is carefully cleaned and then checked for power and confirmed to be working properly, so please rest assured. ・Shipping method We will ship via Yu-Yu Mercari Mail (Yu-Packet (anonymous transaction)). Shipping costs are the responsibility of the seller. Basically, we will ship on the same day or the next day after purchase. Thank you for reading this far. If you have any questions about the product, please feel free to ask in the comments section. We will strive for prompt and courteous service.