Sigourney Weaver as Ellen Ripley is seen wearing a Casio F100 in Alien.

The digital resin watch features four front-facing buttons, a futuristic face and a lightweight build. Originally launched in the late 70s, it was one of Casio’s first resin digital watches and fit perfectly into Ridley Scott’s sci-fi world.

Minimal, functional and oddly iconic — like Ripley herself.