1978 Digital LCD Citizen Scientific Calculator Watch 49-9421 cal. 9140A

1978 Citizen Scientific Calculator Watch from Japan with Box

Behold, we present to the Citizen scientific calculator watch, the master of “nerd watches”. The two-row display shows time, date up top and an eight-digit display for calculating below. Forty buttons surround the dial, many serving two functions. The display can be illuminated with the push of a button too. Includes signed Citizen display box. To those who prefer silvertone/stainless steel, sadly this model was only offered in goldtone.

Make: Citizen
Year of Manufacture: 1978
Model Number: 49-9421
Caliber Number: 9140A

17 thoughts on “1978 Digital LCD Citizen Scientific Calculator Watch 49-9421 cal. 9140A

  1. Nice watch, I have one in my drawer. Bought it in circa 1978 at Brigham Young University, Provo, Utah in the book store when they were first introduced. Paid $395 for it, probably $2000 in today’s money. Bob Weaver 208-731-6760

  2. I have a complete English digitized copy of the manual for this watch If anyone is interested. Contact me to see how to get a copy. Bob Weaver 208-731-6760

  3. Hi I have a Bone Fone . If i wanted to sell it do you know how much
    it would be it in good shape but no box thank you

What do you think? Please tell us!

This site uses Akismet to reduce spam. Learn how your comment data is processed.