When you take any of the AirPods from the ear, it automatically pauses the music.
You can also double-tap on the stem to invoke Siri, and ask it to play/pause the music.
The AirPods will begin charging as soon as they are in the charging case. It does not make any difference, whether the case lid is open or close.
Yes. Airpods will work in the same capacity as EarPods.
You can get 3 hours of listening time by charging AirPods in the charging case for just 15 minutes.
Look past their offbeat design and you'll find that Apple AirPods' compact size and high convenience factor are a winning combination.