• Year
  • 1940 ??
  • Category
  • Medical Technology
  • Radiomuseum.org ID
  • 361336

 Technical Specifications

  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Hearing aid
  • Power type and voltage
  • Dry Batteries
  • Loudspeaker
  • - only for Earphone!
  • Material
  • Bakelite or Plastics (type unknown)
  • from Radiomuseum.org
  • Model: Hearing Aid V-3 - GEM Earphone Co., The; New
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Notes
  • The GEM Earphone Co., Hearing Aid V-3

    "Light, compact, easy to carry...the new GEM wearable hearing aid - with its crystal vacuum-tubes"

  • Mentioned in
  • -- Original prospect or advert
  • Author
  • Model page created by Miguel Bravo-Cos. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum