![File:Vintage Casio Model 801 "Biolator" LED Pocket Electronic Calculator, Made in Japan, 1975 (8720348399) (2).jpg - Wikimedia Commons File:Vintage Casio Model 801 "Biolator" LED Pocket Electronic Calculator, Made in Japan, 1975 (8720348399) (2).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/4/44/Vintage_Casio_Model_801_%22Biolator%22_LED_Pocket_Electronic_Calculator%2C_Made_in_Japan%2C_1975_%288720348399%29_%282%29.jpg)
File:Vintage Casio Model 801 "Biolator" LED Pocket Electronic Calculator, Made in Japan, 1975 (8720348399) (2).jpg - Wikimedia Commons
![RARE Casio Vintage Digital Watch NOS Junk 80s 133 C-801 Calculator Nerd Retro for sale online | eBay RARE Casio Vintage Digital Watch NOS Junk 80s 133 C-801 Calculator Nerd Retro for sale online | eBay](https://i.ebayimg.com/images/g/vBcAAOSwx4Fjdt~d/s-l640.jpg)
RARE Casio Vintage Digital Watch NOS Junk 80s 133 C-801 Calculator Nerd Retro for sale online | eBay
Vintage Watch Hunter - We've got a beautiful Casio C-801 in steel for sale this week. This watch is exceedingly rare and one of the first calculator watches in the world. DM
![File:Vintage Casio Biolator Pocket LED Calculator, Model H-801, Made in Japan, Circa 1975 (9273200144).jpg - Wikimedia Commons File:Vintage Casio Biolator Pocket LED Calculator, Model H-801, Made in Japan, Circa 1975 (9273200144).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/3/30/Vintage_Casio_Biolator_Pocket_LED_Calculator%2C_Model_H-801%2C_Made_in_Japan%2C_Circa_1975_%289273200144%29.jpg)