• Year
  • 1924 ??
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 159533

 Technical Specifications

  • Power type and voltage
  • No Power needed
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Headphones - Signal Electric Mfg. Co.;
  • Notes
  • 2000 Ohms.

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