Seagull X5021

The Seagull X5021 is a Chinese-made automatic movement with a tonneau-shaped plate. It is produced by the Sea-Gull watch manufacturer. Technical specifications such as power reserve, frequency, and jewel count are not publicly documented. The movement is primarily associated with the Pagani Design PD-YS018, where it is marketed as an "Automatic S X5021." Its official relationship with Seagull remains unconfirmed by the manufacturer.