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 |