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
$5500
$4572
$4490
$3999
$3650
$3295
$3099
$2999
$2395
$1999
$1800
$1600
$1399
$1250
$1250
$1150
$1120
$1000
$1000