Roberts CRD-9 - Headphone Socket; Display Backlight

Headphone socket
A 3.5mm Headphone Socket located on the right-hand end of your
radio is provided for use with either headphones or an earpiece.
Inserting a plug automatically mutes the internal loudspeaker.
Display backlight
1. The display backlight has eight levels including off and can be set
by repeatedly pressing and releasing the Light button.
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