• Country
• Japan

• Manufacturer / Brand
• Echo Electric Co., Ltd.; (where?)

• Year
• 1970 ??

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 279928

• Wave bands
• - without

• Details
• Hi-Fi equipment

• Power type and voltage
• No Power needed

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Power out
• 0.1 W (unknown quality)

• Material
• Various materials

• from Radiomuseum.org
• Model: Echo Stereo Headphones HS-502 - Echo Electric Co., Ltd.; where

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes

• ECHO - stereo Headphones

  Made in Japan

• Net weight (2.2 lb = 1 kg)
• 0.480 kg / 1 lb 0.9 oz (1.057 lb)

• Author
• Model page created by Edoardo Sigismondo. See "Data change" for further contributors.

• Other Models

• Here you find 4 models, 4 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Echo Electric Co., Ltd.; (where?)