| Brand: | Sea-Gull, Tianjin | 
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| Family: | ||
| Height: | 5.25 mm | |
| Jewels: | 20 | |
| Reserve: | 40 hours | |
| Frequency: | 21600 A/h | |
| Winding: | Automatic | |
| Diameter: | 26.00 mm ( ligne) | |
| Complications: | 24 Hour Hand, Regulator | |
| Hands: | 24 Hour Hand at 9:00, Central Minute Hand, Hour Hand at 12:00, Small Seconds Hand at 6:00 | |
| Production: – Current | |||||||||||
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| 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |