The Seiko 4206-5621 is a watch model based on the 4206 movement.
Parts List
| SA7W20GN00 | crystal |
| SA7W20L50A | crystal - crystal |
| SA7W20GN | crystal |
| 40MF5NS1 | crown |
| 40MF5NN1 | crown |
| FH2130B01 | case back gasket - case back gasket |
| DB0055B01 | case back gasket - crown and stem gasket |
| DB0055B0 | case back gasket |
| 86572180 | crystal gasket |
| Z5238J | band |
| Z5433K | band - metal band |
| 4801BZ | band - metal band |
| 4801BZ-LK4 | band - link |
| Z5238K-LKG | band - link |
| Z5238K | band - band |
| Z5238K-BK1G | clasp - buckle |
| Z5238K-PB1 | clasp - parts for buckle |
| 4801BZ-BKJ | clasp - buckle |
| 4801BZ-PB1 | clasp - parts for buckle |
| 06C57LGM | others - minute hand |
| 06C57LGH | others - hour hand |
| 3BA075F1BNG | others - second hand |
| 06SC11NG | others - second hand |
| 0351420 | others - winding stem |
| 83137670 | others - case ring |
| 4206562161 | others - case |
| 42065621 | others - case back |
| 4206562175 | others - case |
| 0801274 | others - date dial |
| 0884434 | others - holding ring for dial |
| 4206191LXG14 | others - dial |
| 4206191LXN14 | others - dial |
| 420655 | others - machine code |
| 84312421 | others - dial ring |
| 84320363 | others - dial ring (upper) |
| 84320364 | others - dial ring |
| A140BS | others - push pin |
Caliber 4206
