Sangean DPR-65 Basic Black (V1) - Manual (Page 31)

30
GB
Headphone socket
A 3.5mm Headphone Socket located on the left hand side of your
radio is provided for use with either headphone or an earpiece.
Inserting a plug automatically mutes the internal loudspeaker.
IMPORTANT:
Excessive sound pressure from earphones and headphones can
cause hearing loss.
Display backlight
. When using on batteries, the display backlight will be switched on
for approximately  seconds when any button is pressed.
. When your radio is powered by AC mains the display backlight will
always be on when the radio is switched on.