DENON Denon PerL Pro Black Noise-canceling, truly wireless earphones with personalization features 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 utilize medical technology for personalized sound tailored just for you, and also support lossless audio codecs. Unique personalization feature: Masimo AAT Tuned by sound masters Noise-canceling Continuous playback time: 6 hours (earphones) 18 hours (case) Customizable touch controls IPX4 water resistance