This is a vintage Cartier tank watch. It’s in good vintage condition, though there is wear as to be expected with a vintage watch. I recently bought a new band for it (pictured). This watch runs and keeps time for a few hours, though could use a service as sometimes it stops after a few hours. I’m an experienced watch collector and usually this means it just need a cleaning. This is a manual movement and does not have a battery. The movement is signed Cartier. This is in as-is vintage condition.