The Seiko Y621-8020 is a watch model based on the Y621 movement.
Parts List
| 290P01L20A | crystal - crystal |
| 40ME7ES1 | crown - crown |
| FH2980B02 | case back gasket - case back gasket |
| DB0055B01 | case back gasket - crown and stem gasket |
| 86582731 | crystal gasket - plastic gasket for crystal |
| 7066JB | band - band |
| 70B1JB | band - band |
| 7066JB-LKG | band - link |
| 70B1JB-LKG | band - link |
| 7066JB-BK1G | clasp - buckle |
| 7066JB-PB1 | clasp - parts for buckle |
| 70B1JB-BK1G | clasp - buckle |
| 70B1JB-PB1 | clasp - parts for buckle |
| 11B85FAM | others - minute hand |
| 11B85FAH | others - hour hand |
| 11B85LGM | others - minute hand |
| 11B85LGH | others - hour hand |
| 3BA125F1BNG | others - second hand |
| A100BS | others - push pin (for mb) |
| 0878210 | others - date dial |
| 0884283 | others - holding ring for dial |
| Y62120 | others - machine code |
| Y6218020XE14 | others - dial |
| Y621802LXB14 | others - dial |
| Y621802LXS14 | others - dial |
| 0354022 | others - winding stem |
| 83137850 | others - case ring |
| Y6218020WFA | others - case |
Other models with the same movement