| Manufacturer | Seagull |
| Caliber Number | TY-2706, TY2706, ST1701, ST17 |
| Base Caliber | ST16 |
| Movement Type | Automatic, self-winding mechanical |
| Lignes | 11.5”’ |
| Diameter | 26mm |
| Height | 4.65mm |
| Jewels | 20 |
| Beats per hour | 21,600 vph, 3Hz |
| Power Reserve | > 36 hours |
| Anti-Shock System | Incabloc clone |
| Hand-Windable? | Yes |
| Functions | Central hours; central minutes; small seconds subdial at 6:00 |
| Hacking Seconds? | No |
| Country of Manufacture | Made in China |
| Known Models | (Please add your watch in the comments below…) |
The Seagull caliber TY2706 (aka ST1701) is an automatic movement with a small seconds subdial at 6:00.
The small seconds position on this calibre is made possible because of the placement of the fourth wheel. This layout is useful for modern day versions of vintage mechanical military watches or pocket watch style designs.
Tianjin and Seagull are the same company (Tianjin Seagull Watch Group), but they have offices in Tianjin, China as well as Hong Kong. Apparently the different caliber numbers correspond with where the movements ship out of.
You’ll notice no engravings or inscriptions on the movement or rotor. Not even a jewel count.
Additional Resources:
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