The Seiko 4206-5540 is a watch model based on the 4206 movement.
Parts List
| ES9W09LN00 | crystal |
| 40MF5NS1 | crown |
| 40MF5NN1 | crown |
| FH2030B01 | case back gasket - case back gasket |
| FH2030B04 | case back gasket |
| DB0055B01 | case back gasket - crown and stem gasket |
| 86571250 | crystal gasket - plastic gasket for crystal |
| G5078S | band - metal band |
| 3BA075F1BNG | others - second hand |
| 07SC17NG | others - second hand |
| 08C26NGM | others - minute hand |
| 08C26NGH | others - hour hand |
| 2AE075LBBNG | others - minute hand |
| 1AE048LABNG | others - hour hand |
| 0801274 | others - date dial |
| 0884422 | others - holding ring for dial |
| 42061384XB14 | others - dial |
| 42061384XE14 | others - dial |
| 4206554061 | others - case |
| 0351420 | others - winding stem |
| 83137810 | others - case ring |
| A120AS | others - push pin |
Caliber 4206
