KOCASO M830 - Manual (Page 7)

other information.
For example, choose to set the date, as follows:
Select +: that the increase of 1 unit,
Select - : that the reduction of 1 unit.
Also you can choose the number, enter the input mode. Directly entering
the desired number, then click “Done” to set the Date.
Display settings
In the settings interface choose " Display " to enter the display settings interface, select
"Brightness", Pull the progress bar to adjust the brightness ,as below interface:
Click screen timeout to adjust the delay before the screen automatically turns
off. When screen is turns off, press power key to wake up.
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