Casio AT-550 Janus Vintage Calculator Watch With Original - Etsy
Casio TC-500 Touch Calculator Watch (1983) | eBay
Casio - AT-552 - - Watch - Casio AT552 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA
Before Smartwatches, There was the Gesture-Controlled, Touchscreen Casio AT-552 Janus Calculator Watch from 1984 - TechEBlog
Today I Learned...The Casio AT-552 Janus Was The First Generation Of Touchscreen Watch
Casio Janus AT-552] Finally got the one watch I remember wanting most as a kid looking through old Casio adverts. Calculator watch you enter digits via drawing them on the screen, super