World's first Casio calculator watch ‼️ . Rare Collectible Item Vintage Casio C-80, originally released in 1980 🔥 Features : ... | Instagram
![Vintage Casio C-80 Calculator/ Watch Module 133 First /casio Calculator Watch/ Japan Very Good Condition/ Digital Casio/retro Watchs - Etsy Vintage Casio C-80 Calculator/ Watch Module 133 First /casio Calculator Watch/ Japan Very Good Condition/ Digital Casio/retro Watchs - Etsy](https://i.etsystatic.com/32273226/r/il/ed14ed/5736339045/il_fullxfull.5736339045_7glq.jpg)
Vintage Casio C-80 Calculator/ Watch Module 133 First /casio Calculator Watch/ Japan Very Good Condition/ Digital Casio/retro Watchs - Etsy
![So I have this C80… but on fresh batteries, I can't seem to get any button to work, except the light. All others are unresponsive. I tried poking directly at the module So I have this C80… but on fresh batteries, I can't seem to get any button to work, except the light. All others are unresponsive. I tried poking directly at the module](https://i.redd.it/1f88ox23bzy81.jpg)