Saturday watch here, Casio made some great lines of timepieces, but the calculator watches are probably the most recognized, this one is the Casio CFX-400! Capable of normal timekeeping, it was a scientific calculator with normal math problems as ...
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Casio CFX-400 Scientific calculator for $1,977 for sale from a Private Seller on Chrono24
Casio Cfx-400 Scientific Calculator Watch Module 463 NOS for sale online | eBay
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Casio CFX-400 Scientific calculator for $1,977 for sale from a Private Seller on Chrono24
IEEE - When Casio popularized the calculator watch in the 1980's, it revolutionized both fashion and technology for that era and made a huge impact on the wrist tech sector. Now, Apple