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The Tianjin Watch Company makes a family of movements in the TY3600 series, also known as ST36 from Sea-Gull.
| Complications | Jewels | Diameter | Height | |
| TY3600 ST3600 | Small seconds at 9:00 | 17 | 37.20 | 4.50 |
| TY3600-2B ST3600K | Skeletonized Small seconds at 9:00 | 17 | 37.20 | 4.50 |
| ST3619 | Small seconds at 9:00 | 17 | 37.20 | 4.50 |
| TY3620 ST3620 | Small seconds at 6:00 | 17 | 37.20 | 4.50 |
| TY3620-2B ST3620K | Skeletonized Small seconds at 6:00 | 17 | 37.20 | 4.50 |
| TY3621-2B ST3621K | Skeletonized Small seconds at 6:00 | 17 | 37.20 | 6.76 |
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The Tianjin TY2100 family of movements is an automatic, 28,800 A/h clone of the ETA 2800 family.
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Cal. ST2130, produced by Tianjin Seagull Corporation, is an automatic movement with a central date wheel. The design is similar to the ETA 2824-2. It is also known as TY2130.
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Cal. ST2100, produced by Tianjin Seagull Corporation, is an automatic movement with a central day and date wheels. The design is similar to the ETA 2836-2.
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Cal. ST3600, produced by Tianjin Seagull Corporation, is a hand-winding movement with Lépine small seconds (at 9:00) similar to the Unitas 6497. It features a classic bridge design and finishing on the back side.
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| Hand Winding | Automatic | |
| No Date | Nomos α (Alpha) Nomos Alpha.2 | Nomos ε (Epsilon) |
| Date | Nomos β (Beta) | Nomos ζ (Zeta) |
| World Time | Nomos ξ (Xi) | |
| Power Reserve | Nomos γ (Gamma) | |
| Date and Power Reserve | Nomos δ (Delta) |
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| Hand Winding | Automatic | |
| No Date | Nomos α (Alpha) Nomos Alpha.2 | Nomos ε (Epsilon) |
| Date | Nomos β (Beta) | Nomos ζ (Zeta) |
| World Time | Nomos ξ (Xi) | |
| Power Reserve | Nomos γ (Gamma) | |
| Date and Power Reserve | Nomos δ (Delta) |
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Cal. A07.161 is an automatic movement with date and power reserve pointer produced by ETA under the Valgranges brand. Like many other A07 Valgranges movements, it is built on the ETA 7750 architecture even though it is not a chronograph movement. Also like most Valgranges movements it is over-sized, measuring 36.60 mm in diameter. It is closely related to the time-only Cal. A01.111 and is the basis for the Longines Cal. L693.2.
Cal. A07.161 typically has a date window at 3:00 on the dial, with the date wheel pushed out in the large movement for bigger watches. It also features a power reserve indicator pointer at 6:00.
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The Valgranges A07.211 is essentially identical to the venerable ETA 7750 but on a larger main plate. The movement also lacks a day complication.
The movement is also sold as the EDOX 012.
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ETA Cal. 6498-2 is a “hunter” pocket watch movement. It is a more highly-decorated version of the similar Cal. 6498-1 and is placed in the “Mecaline Specialties” line at ETA.
Cal. 6497 and 6498 date to about 1950. They remain in production as of 2019 and are used as a basis for training in many watch schools and are decorated and developed into many complicated movements. The movements were originally produced by Unitas before it was fully integrated with ETA. They were updated to “-1” spec around 1967, and the ETA name was applied only around 2005.
