I'm giving away this item because I have a spare. It's a black charging case only for the SONY WF-1000XM4. This case can be used with either white or black WF-1000XM4 earbuds. Functionality has been confirmed: 1. Resetting by opening and closing the lid. 2. Charging via a USB Type-C cable (see photo 8). 3. Wireless charging (see photo 9). 4. Charging earbuds from the internal battery (tested with white earbuds, see photos 10-11). 5. LED indicator lights (color during charging and reset operations). Please check the photos for battery performance data. Depending on the battery consumption of the earbuds, after playing the earbuds for 3 hours and charging them from around 70% to 100% using this charging case, the charging case's battery level was at 82%. Typically, if you listen to music for 2-3 hours, you can probably charge the earbuds 3-4 times (this is an estimate, please understand) (see photos 10-11). The exterior is relatively clean, but there are some scratches, and the model number on the back is slightly difficult to read. Please check the photos carefully as it is not new. I haven't done any repairs, as it has been working fine since I received it. Cables and wireless chargers are not included. This is only the WF-1000XM4 charging case. It will be delivered via postal service. Series: WF Series Sony Model Name: WF-1000XM4 5No15Fu