How to change the screen ratio?

Related Products:ETOE D2 Pro, ETOE E2 Pro, ETOE E3 Pro
The steps to change the screen ratio:
On Andriod TV: Long press the focus button to open the menu---Choose the "Aspect Ratio" to adjust the screen ratio.
In the Projector System: Click the navigation up bottom---Choose the "Aspect Ratio" to adjust the screen ratio.
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