【Additional Note】This is an item for which a transaction was previously canceled due to our mistake after a purchase was made. We sincerely apologize to the previous buyer. This time, we are prepared to ship within the deadline without any issues. This product is a true wireless stereo (TWS) earphone with independent earbuds for both ears. It's an open-ear type that allows you to enjoy music and audio without blocking your ears, and it's worn by clipping onto your ear like an ear cuff (ear clip). Because it doesn't block your ears, it's perfect for "while-listening," allowing you to hear your surroundings simultaneously. It's also recommended for use during sports such as jogging and walking. It might also be useful as "sleep headphones" for sleeping. It supports multi-point connectivity, allowing simultaneous connection to multiple devices and seamless switching without hassle. It also supports multi-pairing, which remembers multiple paired devices. - Model Name: Crossky C30 - Bluetooth Version: 5.4 - Driver Size: 10.8mm It is a completely unopened item with the shrink wrap still on. Perhaps because it's a foreign version, there is no technical compliance mark (技適) on the package. However, the Crossky C30 page on the official QCY Japan website confirms technical compliance. There may be a mark on the main unit. Please understand this and purchase accordingly, as we have not confirmed the details. Regarding this product, we will accept returns at the buyer's request until the transaction is completed. In the case of a return at the buyer's request, the buyer will generally be responsible for the shipping costs.