Denon AH-C120MA Studio Quality In-Ear Headphones with 1-Button Smartphone Remote 11.5mm drivers professionally tuned to a Flat EQ to deliver acoustically transparent music experience An in-line 1-button remote and microphone for easy control of select Android devices and other smartphones Also Included: Carrying Case, Silicone Ear Tips (S, M, L), and Comply TX-400M Foam Ear Tips Further enhance your listening experience by downloading the Denon Audio Smartphone App available for download from the Apple App Store or Android Marketplace