The Seiko 4206-057J is a watch model based on the 4206 movement.
Parts List
| 255W29LM02 | crystal |
| 255W29LM | crystal |
| 40MF5NS1 | crown |
| FE258BA11 | case back gasket - case back gasket |
| DB0055B01 | case back gasket - crown and stem gasket |
| DB0055B0 | case back gasket |
| 86583950 | crystal gasket |
| 86583590 | bezel gasket |
| Z1517J | band |
| 3AA125F1ANG | others - second hand |
| 0351420 | others - winding stem |
| 09C93PGM | others - minute hand |
| 09C93PGH | others - hour hand |
| 10SC31NG | others - second hand |
Caliber 4206
