The Seiko 2Y00-5021 is a watch model based on the 2Y00 movement.
Parts List
| ET5N05JN01 | crystal |
| ET5N05JN | crystal |
| 30ND3NN1 | crown |
| 0D155BA11 | case back gasket |
| DZ0040B0 | case back gasket |
| WEA05K | band - leather band |
| WEA06K | band - leather band |
| WEJ07K | band - leather band |
| WEJ09K | band - leather band |
| WEJ10K | band - leather band |
| 1CC040A1BAA | others - hour hand |
| 2CC055A1BNG | others - minute hand |
| 1CC040A1BNG | others - hour hand |
| 05Y05NGH | others - hour hand |
| 2Y000111XG14 | others - dial |
| 2Y000121XB14 | others - dial |
| 2Y000121XG14 | others - dial |
| 2Y000131XS19 | others - dial |
| 2Y005020 | others - case back |
| 2Y00502125 | others - case |
| 2Y0065 | others - machine code |
| 82820470 | others - case ring |
| T090BS | others - push pin |
| DZ0040B01 | others - crown and stem gasket |
| 05Y05DGH | others - hour hand |
| 05Y05NGM | others - minute hand |
| 2CC055A1BAA | others - minute hand |
| 05Y15NGM | others - minute hand |
| 05Y15AGM | others - minute hand |
| 05Y15AGH | others - hour hand |
| 05Y15NGH | others - hour hand |
Caliber 2Y00
