The Seiko 2Y00-0420 is a watch model based on the 2Y00 movement.
Parts List
| 150A02JN02 | crystal - crystal (inorganic) |
| 150N57JN01 | crystal |
| 32N23NA1 | crown |
| 32N23NN1 | crown |
| 0G1600B01 | case back gasket - case back gasket |
| 0G1600B0 | case back gasket |
| B5600T | band |
| B5600G | band |
| B5600G-BK3G | clasp - clasp |
| B5600T-BK3G | clasp - clasp |
| 2Y000420 | others - case back |
| 2Y00042025 | others - case |
| 2Y0004202N | others - case |
| 2Y001210XS14 | others - dial |
| 2Y001220XG14 | others - dial |
| 2Y0065 | others - machine code |
| 82820530 | others - case ring |
| B080BS | others - push pin |
| DA007BA11 | others - crown and stem gasket |
| 0351236 | others - winding stem |
| 06Y33DGH | others - hour hand |
| 06Y33DGM | others - minute hand |
| 06Y07DCM | others - minute hand |
| 06Y07DCH | others - hour hand |
Caliber 2Y00
