Casio DW-5200 - the "Hero" - from 1984 - with 240 module for $1,557 for sale from a Private Seller on Chrono24
Casio - DW-5200 - - Watch - Casio DW5200 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA