The Casio CA-53W, from 1988, is a quartz digital watch with a built-in eight-digit calculator. It has a resin case, a stainless steel case back, a small calculator keypad on the dial and a backlight, alongside a time display with alarm and stopwatch functions. I could not find reliable official figures for the case size and water resistance, so they are not stated here.

It belongs to Casio’s Data Bank and calculator watch family, which gave small calculator watches a place in the digital boom of the 1980s. The CA-53W is the best known model of that family.

The community loves it as a nerdy and affordable retro piece, helped by its low price and recognisable look. The CA-53W remains in production in Casio’s Vintage collection.