This page shows the various 'other' instruments available from JMI: harmonicas, accordions, saxophones, keyboards, and the Vox radio microphone.
The Vox radio microphone was described as follows:
The solution for performers who wish to move around freely without direct contact with the amplifier or the encumbrance of connecting cables. A Lavalier type microphone is connected to a miniature transmitter concealed in a pocket. The compact receiver unit fits to any high impedance type amplifier. GPO approved. Crystal controlled. Transmitter and Receiver operating on 174.6 to 175 m/cs
$2195
$6500
$5500
$880
$1250
$1600
$1800
$100
$775
$230
$4490
$770
$115
$3295
$1039
$4572
$450
$550
$399
$1250