By reading the iFixit Teardown, one can realize that the AirPods use the W1 chip for wireless communications. Since both Airpods are wireless, there are questions still unanswered.
Do both Airpods connect to the phone? Or does one Airpod connect to the phone and the other Airpod? Do both Airpods use Bluetooth technology?
From the iOS/Android perspective, is it possible to connect to multiple Bluetooth devices simultaneously?
Here is a small prompt from the IFixit Teardown that lists the components inside the Airpods: