Mobile VR headsets: hardware or software?

1. Does the Google Daydream View headset contain any electronic hardware/software components it it? If so, what are their roles? 2. Same question but for the Samsung Gear VR. 3. The Gear VR has a label on its side that reads "Powered by Oculus". What does that even mean? I think it's safe to say the Google Cardboard has no electronic components inside the headset, right? So that's off the list.