1977 Sinclair Wrist Calculator

__SPACER__ Strictly speaking the Sinclair Wrist Calculator from 1977 should not be in the list since it didn’t actually tell the time. However, it arguably fits into the development of the calculator watch. And we like it!

5 Responses to “1977 Sinclair Wrist Calculator”

  1. Huwie says:

    I want one now!!

  2. Alex in Toronto says:

    Which object today is the Sinclair calculator of yesterday?

  3. If you want to see the November 1977 advert for this calculator, take a look at:


  4. Jonesrt0923 says:

    I have the complete kit and I’m looking to sell!
    Email me at jonesrt0923@aol.com to make an offer

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