Nextar Digital MP3 Player - Manual (Page 28)

Timer setting press the >> or << button to select the time you want it to
automatically shut off 10 MIN, 15 MIN, 30 MIN, 60MIN, 90MIN, 2HR, 3HR.
Backlight setting
Under the Timer setting, press the ( or ( button to select the backlight
setting. Backlight setting includes: Always on, 10s off, 20s off, 30s off,
40s off, 50s off , 60s off and 2mins. Press the M button to save.
Exit return to the upper menu.
Music resume
Select YES to use this function. Select NO to exit.
Reset
Select YES return to the default setting. Select NO to exit.
About
You can check the total memory of the unit and available memory capacity.