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Before Smartwatches, There was the Gesture-Controlled, Touchscreen Casio AT-552 Janus Calculator Watch from 1984 - TechEBlog
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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
Casio - AT-551G - - Watch - Casio AT551G - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA
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Casio gesture controlled touchscreen calculator watch « Adafruit Industries – Makers, hackers, artists, designers and engineers!
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Amazon.com: Casio General Men's Watches Data Bank DB-360G-9ADF - WW : Casio: Clothing, Shoes & Jewelry
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