Vintage CASIO CFX - 400 watch - Scientific calculator - Collectible - price reduced to $550 | WatchUSeek Watch Forums
![Casio CFX-400 Scientific Calculator Watch Module 463 - NEW OLD STOCK - RARE FIND | WatchCharts Marketplace Casio CFX-400 Scientific Calculator Watch Module 463 - NEW OLD STOCK - RARE FIND | WatchCharts Marketplace](https://cdn.watchcharts.com/listings/8cffe54a-c91b-48ad-abe8-77680768faa0.jpg?d=300x300)
Casio CFX-400 Scientific Calculator Watch Module 463 - NEW OLD STOCK - RARE FIND | WatchCharts Marketplace
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
![vintage casio cfx-400 scientific calculator lcd watch module 463 japan repair | WatchCharts Marketplace vintage casio cfx-400 scientific calculator lcd watch module 463 japan repair | WatchCharts Marketplace](https://cdn.watchcharts.com/listings/d8157ff7-2040-4277-b36e-d43905bb5577.jpg?d=600x600)
vintage casio cfx-400 scientific calculator lcd watch module 463 japan repair | WatchCharts Marketplace
![Casio CFX-400 Scientific Calculator Watch Module 463 - NEW OLD STOCK - RARE FIND | WatchCharts Marketplace Casio CFX-400 Scientific Calculator Watch Module 463 - NEW OLD STOCK - RARE FIND | WatchCharts Marketplace](https://cdn.watchcharts.com/listings/a0cf3e6d-4ba4-4ed7-a1db-4becba69b877.jpg?d=300x300)
Casio CFX-400 Scientific Calculator Watch Module 463 - NEW OLD STOCK - RARE FIND | WatchCharts Marketplace
![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 ... 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 ...](https://preview.redd.it/0kb79dxk4qb61.jpg?width=1080&crop=smart&auto=webp&s=c6b7f97d86e5135448fc53c369d1a7fd5b93c434)