You can operate the PowerRay with the VR Googles as well.
In order to switch that option, follow the steps:
As soon as your PowerRay is connected, enter the SETTINGS.
It is the screw icon in right upper corner.
First tile with "Control settings" allow to decide how would you like to operate the device.
Set in as indicated at the picture below.
Then in main menu, choose the "VR Googles" button and wear the Googles.
In the main screen, the rocker will disappear and you should see small indication that gyroscope is enabled.
Be careful as your smallest movement will affect the PowerRay.
Enjoy your view!