Casio - AT-550 - - Watch - Casio AT550 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA

CASIO AT-550

Find it on eBay.com -

Year of launching

Screen size

Date / time functions

The Invisible CASIO Calculator Watch!

Links

Interesting article on liquidcrystal.co.nz

Article in Buxton collection