Yes. Airpods will work in the same capacity as EarPods.
The standard packaging includes, AirPods (in the charging case), Quick start guide and a lightning cable.
Yes, you can use Airpods with iPhone 7.
AirPods usually deliver about 5 hours of listening time one one single charge.
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.