Apollo23-Black In-Ear Stereo Flat Cable Earphone Headset with Microphone Volume Control for Apple iPhone 5 iPhone 4 4S Smartphones Excellent sound quality and super clear sound. High quality Hands-Free Stereo Headset with microphone for Apple iPod iPhone 3G/3Gs iPhone 4 iPhone 4s iPhone 5 Smartphones The microphone function is exactly the same as the original Apple earphone. With one press you can answer your call immediately (very convenient while you are listening to your favorite music) once the call hang up, your favorite music will come up again automatically and you don't need to touch anything. Can also toggle the Play or Pause or adjust volume for your music with a simple press on the specified button.