Purchased in January 2024. Used approximately once every two months. Selling because I don't use them much. Popular model further evolved: An upgraded model that further enhances the sound quality and functionality of the popular "Soundcore Liberty Air 2." Equipped with Anker's proprietary "Ultra Noise Cancelling." Two microphones, placed on the outside and inside of the earbuds, detect surrounding sounds and eliminate noise, delivering clear music. You can also select your current environment on the app to activate the optimal noise canceling for that scene. HearID 2.0: In addition to automatically creating the traditional Hearing Profile, you can now combine music genres such as rock and pop to customize your settings and enjoy sound that better suits your preferences. Ambient Sound Mode: Even while listening to music, you can hear conversations and announcements in public facilities by taking in external sounds while wearing the earbuds. (※This function requires settings in the app) Intuitive touch controls: By operating the touchpads on the earbuds, you can answer calls, play, pause, and skip tracks, as well as switch between noise canceling and ambient sound modes.