kokopelli on Instagram: “1980's CASIO C-801 the 1st calculator watch metal version.…”
ヤフオク! - CASIO 801-MR 電子式卓上計算機 ケース・アダプ...
CASIO C-801
Casio - C-801 - - Watch - Casio C801 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA
Casio C-801 Calculator Watch Made in Japan Module 133.FOR PARTS!………? | eBay