I've lost the earphone parts, so this is just the case. Immediate purchase is OK. ◎ Regarding returns: We cannot accept returns after purchase, so please make sure you understand this before purchasing. ◎ About the product: Ultra Noise Cancelling 2.0: Automatically adjusts the strength of noise cancellation according to the surrounding noise level. It maximizes immersion in music regardless of the environment. Up to 60 hours of long playback: The earphones themselves can play for up to 12 hours on a full charge, and with the charging case, you can listen to music for up to 60 hours. Also supports quick charging, with a 10-minute charge providing about 5 hours of playback. Powerful sound: Anker's proprietary BassUp technology and large 11mm drivers deliver deep bass and powerful sound. You can also adjust the sound quality to your liking with the Soundcore app. Multi-point connection support: Supports stress-free multi-point connection, allowing you to connect to two devices simultaneously, such as listening to music on your smartphone and attending web conferences on your PC.