Name/Title
Vacuum Tube (Peanut) Hearing AidEntry/Object ID
1000.1789.5Description
Hearing Aid, Vacuum Tube (Peanut)Collection
Larry BoysenMade/Created
Manufacturer
SonotoneNotes
where made: USA
model number: 700
serial number: 814307General Notes
Note
A-B switch for filtering out high-frequency sound, volume control wheel (right), 3 position on-off switch.