Use Apple EarPods
The EarPods that come with your iPhone feature a microphone, volume buttons, and the center button.
Use the center button to answer and end calls, control audio and video playback, and use Siri, even when iPhone is locked.

Control audio with your EarPods
Pause a song or video: Press the center button. Press again to resume playback.
Skip to the next song: Press the center button twice quickly.
Return to the previous song: Press the center button three times quickly. (Works only while audio is playing.)
Fast-forward: Press the center button twice quickly and hold.
Rewind: Press the center button three times quickly and hold.
Manage calls using your EarPods
Answer an incoming call: Press the center button.
End the current call: Press the center button.
Decline an incoming call: Press and hold the center button until two low beeps confirm you declined the call.
Switch to an incoming or on-hold call, and put the current call on hold: Press the center button. Press again to switch back to the first call.
Switch to an incoming or on-hold call, and end the current call: Press and hold the center button until two low beeps confirm you ended the first call.
Activate Siri from your EarPods
Ask Siri: Press and hold the center button until you hear a beep. Let go, then make your request.
You can use Health on iPhone to monitor the audio levels from your EarPods. It can be helpful to understand how long and often you’re exposed to loud volume as it can affect your hearing. See Monitor audio levels on iPhone.