Thank you very much for viewing! ^ ^ This is a new, unused item, but it has been opened once, so thank you for your understanding. m(_ _)m Equipped with active noise canceling. You can enjoy silence and high-resolution music. Voice pickup mode that allows only human voices to pass through clearly. Dual-device simultaneous connection, seamless switching. Up to 7 hours of continuous music playback with the earphones alone, and up to 30 hours when combined with the charging case (when noise canceling is off). Various controls are possible with the high-sensitivity sensors installed in the earphones. Thank you very much. m(_ _)m