AirPods will forever change the way you use headphones. Whenever you pull your AirPods out of the charging case, they instantly turn on and connect to your iPhone, Apple Watch, iPad, or Mac.1 Audio automatically plays as soon as you put them in your ears and pauses when you take them out. To adjust the volume, change the song, make a call, or even get directions, just double-tap to activate Siri.
According to Official Apple Support Center, https://support.apple.com/kb/SP750, just 15 minutes in the case gives you 3 hours of listening time. 1st gen AirPods deliver up to 5 hours of listening time and up to 2 hours of talking time on one charge which takes about 30 minutes in the case.