The projector is suitable for any device that supports output through HDMI, VGA or AV and converts the output to its native resoultion

We strive to answer our customers on the same working day and plan to answer all inquiries efficiently 

While the projector does have a somewhat decent built in speaker it is recommended to use your own speaker (or other form of external audio) through use of the aux port on the back

Yes. The projector has a mount on the underside that allows for it to be fasted to an installed roof mount and the image can be flipped to accommodate this in the settings menu

Yes. The projector has keystone adjustment which can be changed from the back of the projector

While the projector is not loud during normal use with the internal speaker or an external speaker it wont be noticeable.