TINY RADIO BUILT IN CIGARETTE CASE (Nov, 1935)
Of course you probably have to plug this thing in to actually use it. I doubt they managed to cram batteries in there.
TINY RADIO BUILT IN CIGARETTE CASE
A radio built into a cigarette case was a novelty exhibited at a recent British radio exposition. The miniature receiver employs a single tube â€”one of the smallest in the worldâ€” and has a pair of midget tuning dials. Only half the thickness of the case is occupied by the set, ample room remaining for about a dozen cigarettes. The radio is turned on or off by means of a knob at the outer edge of the case, which is shown open in the accompanying photograph to reveal the compact units of the midget receiver.