The Seiko 2Y01-5B40 is a watch model based on the 2Y01 movement.
Parts List
| ESBW16JM | crystal |
| ESBW16JM01 | crystal |
| 30MA2NA1 | crown - crown |
| EZ0035B0 | case back gasket |
| 0A1600N01 | case back gasket |
| S5001C | band |
| 81604649 | band - bracelet fixing pin |
| S5001C-LKG | band - link |
| S5001D | band - metal band |
| S5001D-LKG | band - link |
| S5001D-BK4G | clasp - clasp |
| S5001C-BK4S | clasp - clasp |
| 07SC02NG | others - second hand |
| 0351236 | others - winding stem |
| 05T02NGM | others - minute hand |
| 81180229 | others - bracelet fixing pipe |
| 2Y010G50XG14 | others - dial |
| 2Y010G60XS14 | others - dial |
| 2Y015B40 | others - case back |
| 2Y015B4061 | others - case |
| 2Y015B40WE | others - case |
| 2Y019 | others - machine code |
| 82810440 | others - case ring |
| 05T06NGH | others - hour hand |
| EZ0035B01 | others - crown and stem gasket |
| 05T02AGM | others - minute hand |
| 05T06AGH | others - hour hand |
| ESBW16JM | crystal |
| ESBW16JM01 | crystal |
| 30MA2NA1 | crown - crown |
| EZ0035B0 | case back gasket |
| 0A1600N01 | case back gasket |
| S5001C | band |
| 81604649 | band - bracelet fixing pin |
| S5001C-LKG | band - link |
| S5001D | band - metal band |
| S5001D-LKG | band - link |
| S5001D-BK4G | clasp - clasp |
| S5001C-BK4S | clasp - clasp |
| 07SC02NG | others - second hand |
| 0351236 | others - winding stem |
| 05T02NGM | others - minute hand |
| 81180229 | others - bracelet fixing pipe |
| 2Y010G50XG14 | others - dial |
| 2Y010G60XS14 | others - dial |
| 2Y015B40 | others - case back |
| 2Y015B4061 | others - case |
| 2Y015B40WE | others - case |
| 2Y019 | others - machine code |
| 82810440 | others - case ring |
| 05T06NGH | others - hour hand |
| EZ0035B01 | others - crown and stem gasket |
| 05T02AGM | others - minute hand |
| 05T06AGH | others - hour hand |
Caliber 2Y01
