1. 

   Mister X Moderator Staff Member

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   The Mercury from 1966, small and cordless!
   
   
   

    

   Mister X, Sep 5, 2023

   #1

   Transcept likes this.
2. 

   Mister X Moderator Staff Member

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   It says music but I wonder what the headphone looked like or was it just an ear plug like the transistor radios had?

    

   Mister X, Sep 12, 2023

   #2
3. 

   Mister X Moderator Staff Member

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   I found another press release from April 1966, 3M had their own version.
   
   
   

    

   Mister X, Sep 13, 2023

   #3

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