The Seiko 2Y01-0020 is a watch model based on the 2Y01 movement.
Parts List
| 195A02JN02 | crystal - crystal (inorganic) |
| 195A02JN | crystal |
| 195N45JN | crystal |
| 195N45JN00 | crystal |
| 40MX1NG1 | crown |
| 40MX1NN1 | crown |
| 0G1820B0 | case back gasket |
| DZ0040B0 | case back gasket |
| 0G1820B01 | case back gasket |
| BHA32G | band - leather band |
| BHJ47G | band - leather band |
| BHJ48G | band - leather band |
| BHJ49G | band - leather band |
| 1BD050ACBAA | hand - hour hand |
| 2BD072ABBAA | hand - minute hand |
| 3BA075F1BNG | others - second hand |
| 1BC047A1BNG | others - hour hand |
| 2BC070A1BNG | others - minute hand |
| 07SC43NG | others - second hand |
| 2Y010020 | others - case back |
| 2Y01002025 | others - case |
| 2Y010020HE | others - case |
| 2Y010460XS14 | others - dial |
| 2Y010470XB14 | others - dial |
| 2Y010470XY14 | others - dial |
| 2Y0165 | others - machine code |
| 82821290 | others - case ring |
| A120AS | others - push pin |
| 07T37AGH | others - hour hand |
| DZ0040B01 | others - crown and stem gasket |
| 07T37AGM | others - minute hand |
| 07T27NGM | others - minute hand |
Caliber 2Y01
