AUDIOLOGY Core Stereo In-ear Headphones - with Microphone &ndash; Compatible with all your Music and Phone Devices + Extra Ear Tips. - Black/Red CORE HEADPHONES with a comfortable in-ear design with 3 soft silicone rubber ear tips (S/M/L) included that reduce outside noise. Excellent sound quality and microphone in a portable and lightweight headphone. BUILT-IN MIC FOR CALLS. Switch easily between songs and incoming calls. No need to take off your headphones or talk into the phone. SLEEK FLAT CABLE DESIGN: helps in reducing cable tangles as well as provide a sleek and modern look for your lifestyle. WORKS WITH ALL smartphones, tablets, computers, MP3 players and other devices with 3.5 mm port