The Casio CA-50: Marty McFly’s calculator watch and the coolness of cheap technology

Marty McFly is a skateboarder, musician and accidental time traveller, so an ordinary luxury watch would make little sense on his wrist. In Back to the Future (1985), his Casio CA-50 is a better piece of character design. The small black resin watch turns its face into a miniature electronic calculator, with an LCD time display above a keyboard of tiny numbered buttons. What looks charmingly retro today was completely credible youth technology in the mid-1980s.

The CA-50 is a quartz digital model with the everyday functions of a wristwatch and a simple eight-digit calculator. It is light, inexpensive in spirit and visually nerdy in a way that suits Marty’s curiosity about machines. Collector discussions frequently confuse it with the similar CA-53W. The CA-50 appears in the original film; the better-known CA-53W is associated with the sequels and later reissues. Casio’s own anniversary marketing often celebrates the broader calculator-watch silhouette, but the exact vintage references are not interchangeable.

This is cinematic influence at its most democratic. A screen prop became beloved not because it was exclusive, but because its gadget-like design instantly communicated an era and a character. The original CA-50 is discontinued; interested buyers should distinguish genuine vintage examples from modern CA-53W successors. Read the full ChronoLume cinema feature.