There has been confusion on this but according to John Gruber, AirPods can be used like any other BT headphones, meaning they can be used with non-Apple devices.
http://daringfireball.net/linked/2016/09/08/airpods-hands-on
http://daringfireball.net/linked/2016/09/08/airpods-hands-on
It’s true that the special pairing magic only works on Apple devices running the new OSes. But the AirPods can most certainly be used as regular old Bluetooth ear buds with an Android device or a Mac running a pre-Sierra OS or whatever. The pairing button is on the capsule, not the AirPods.