The Seiko 4206-0621 is a watch model based on the 4206 movement.
Parts List
| 255W51LM01 | crystal - crystal |
| 255W51LM | crystal |
| 40MF5NS1 | crown |
| 40MF5NN1 | 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 |
| Z1577K | band - band |
| Z1553J | band |
| Z1577J | band - metal band |
| Z1553K | band |
| Z1553K-BK5G | clasp - clasp |
| Z1577K-BK5G | clasp - buckle |
| 1AE057LABLG | others - hour hand |
| 3BA125F1BNG | others - second hand |
| 0351420 | others - winding stem |
| 83137250 | others - case ring |
| 4206062175 | others - case |
| 82342551 | others - bezel |
| 42060621 | others - case back |
| 0801274 | others - date dial |
| 0884282 | others - holding ring for dial |
| 0884431 | others - holding ring for dial |
| 4206062161 | others - case |
| 4206230LXB14 | others - dial |
| 4206230LXG14 | others - dial |
| 4206230LXL14 | others - dial |
| 4206230LXN14 | others - dial |
| 420654 | others - machine code |
| 82342559 | others - bezel |
| A150BS | others - push pin |
| 09SC31NG | others - second hand |
| 09C13LGM | others - minute hand |
| 09C13LGH | others - hour hand |
Caliber 4206
