Bowers & Wilkins C5B In-Ear Headphones - Black C5 delivers outstanding sound experience for people living active lifestyles. Made for iPhone remote/microphone cable, also works with all smartphones, tablets and MP3 players (mobile devices other than compatible iOS models will not necessarily offer control functionality) Unique adjustable Secure Loop design ensures a precise yet comfortable fit. Micro Porous Filter acts as a sonic diffuser, opening up the sound and making music feel remarkably rich and expansive. Bowers & Wilkins' C5 In-Ear Headphones come with a 2-year limited warranty only when purchased from an authorized dealer including Amazon.com (indicated by ships from and sold by Amazon.com). Connectivity technology: wired