This is a
delightfully compact radio - even if the audio quality leaves something
to be desired, as the speaker is only a 2.5" elliptical unit.
The RCA 2B series
radios are point wired and exhibit a mature circuit. This model also
features a 'Battery-Life Saver' switch that lowers the heater voltage
by placing a small resistance in line.
Other colour variations
were: 2B401 (Black); 2B402 (Ivory); 2B403 (Green); 2B404 (Tan); 2B405
(Red).
It is a wonderful
example of what US industry could do at the time the British were
churning out 'handbag' and 'suitcase' portables but, to be fair, it is
a single band, battery only unit with mediocre sound and an easily
breakable case.