A Seagull movement is a mechanical caliber produced by Tianjin Sea-Gull Watch Group, one of China's oldest and most established movement manufacturers. In replica watch production, Seagull calibers occupy a distinct position — they are generally regarded as a step above standard Chinese automatic movements in terms of finish quality and mechanical refinement, making them a preferred choice for producers targeting higher build standards. Like Mingzhu calibers, Seagull movements used in high-quality replica production are typically modified in-house rather than deployed in standard form.
Seagull produces a wide range of calibers covering automatic, manual, and chronograph functions. In replica production, the most commonly encountered variants are the ST1655 and ST2500 — automatic calibers selected for their reliability, finishing quality, and compatibility with demanding case and dial combinations. Producers working with Seagull movements at the higher end of the quality spectrum adjust these calibers internally before assembly, refining rotor configuration and movement integration to align with the overall build standard of the reference being produced.
In Practice
- Seagull movements are produced by Tianjin Sea-Gull Watch Group, a Chinese manufacturer with a long production history — their mechanical refinement and finish quality place them above standard Chinese automatic calibers in the replica market hierarchy.
- In high-quality replica production, Seagull calibers are modified in-house before assembly — rotor configuration and movement integration are adjusted to meet the specific requirements of the reference being produced.
- The ST1655 and ST2500 are the most commonly used Seagull variants in replica production — both are automatic calibers selected for their reliability and compatibility with complex case and dial configurations.
- Seagull movements are associated with producers targeting higher build standards — their use alongside strong case and dial quality reflects a production approach oriented toward overall consistency rather than cost minimization.
- Individual Seagull caliber variants — ST1655 and ST2500 — each have dedicated glossary entries covering their specific configurations, beat rates, power reserves, and typical use cases in replica production.
Related Terms
Sea-Gull ST1655 V3, Seagull ST2500 V2, Automatic Movement, Mingzhu Movement, Clone Movement
Read Next
For a detailed comparison of movement types used in replica watches — including how Japanese, Chinese, and clone calibers differ in practice — read: Replica Watch Movements Explained