DENON Denon PerL Pro Black Noise-canceling, truly wireless earphones with personalization Used for about two weeks after purchasing new. All accessories, such as ear tips, are included. Please ask any questions in the comments before purchasing. High-quality, truly wireless earphones that realize your own custom-made sound with a personalization function that applies medical technology and also support lossless audio codecs. Unique personalization function: Masimo AAT Tuned by sound masters Noise canceling equipped Continuous playback time: 6 hours (earphones) 18 hours (case) Customizable touch controls IPX4 water-resistant performance