Roberts Radio R9903 - Manual (Page 6)

General
Do not allow this unit to be exposed to water, steam or sand. Do not leave
your radio where excessive heat could cause damage such as in a parked
car where the heat from the sun can build up even though the outside
temperature may not seem too high. It is recommended that the FM band
be used where ever possible as better results in terms of quality and
freedom from interference will usually be obtained than on the MW or LW
bands.
5
Headphones
1. A Headphone Socket (3.5mm) located on the right hand end of your
radio is provided for use with either headphones or an earpiece.
Inserting the headphone plug automatically mutes the internal loud-
speaker.
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