With the built-in microphone, you can easily switch between playing music and answering calls. Never miss a call while listening to music. With the built-in remote control, you can take and end calls, activate voice control and control your music individually: play / pause / track forward / track back (if supported by your phone). Less unwanted ambient noise so you can enjoy your music without interference. And three different sizes of silicone ear cushions (S, M, L) ensure a personalized perfect fit.