The Seiko 2K01-0121 is a watch model based on the 2K01 movement.
Parts List
| 280A02JN02 | crystal - crystal (inorganic) |
| 280N41JN00 | crystal - crystal |
| 280N41JN | crystal |
| 280A02JN03 | crystal |
| 30MB9NN1 | crown |
| 0H2600B0 | case back gasket |
| AC004BA11 | case back gasket - crown and stem gasket |
| 0H2600B01 | case back gasket - case back gasket |
| Z1573K | band |
| Z1573J | band |
| 3AA125F1ANG | others - second hand |
| 12P01NGH | others - hour hand |
| 12P01NGM | others - minute hand |
| 3AA125F3ANG | others - second hand |
| 0351291 | others - winding stem |
| 82833870 | others - case ring |
| 2K010011XB14 | others - dial |
| 2K010011XG14 | others - dial |
| 2K010011XN14 | others - dial |
| 2K010021XS29 | others - dial |
| 2K010031XS29 | others - dial |
| 2K010121 | others - case back |
| 2K01012125 | others - case |
| 2K01012129 | others - case |
| 2K0110 | others - machine code |
| A180BS | others - push pin |
| 11SC17T1 | others - second hand |
| 2AC110A1BCA | others - minute hand |
| 11P11CGM | others - minute hand |
| 2AC110A1BAA | others - minute hand |
| 1AC080A1BAA | others - hour hand |
| 11P11AGH | others - hour hand |
| 280A02JN02 | crystal - crystal (inorganic) |
| 280N41JN00 | crystal - crystal |
| 280N41JN | crystal |
| 280A02JN03 | crystal |
| 30MB9NN1 | crown |
| 0H2600B0 | case back gasket |
| AC004BA11 | case back gasket - crown and stem gasket |
| 0H2600B01 | case back gasket - case back gasket |
| Z1573K | band |
| Z1573J | band |
| 3AA125F1ANG | others - second hand |
| 12P01NGH | others - hour hand |
| 12P01NGM | others - minute hand |
| 3AA125F3ANG | others - second hand |
| 0351291 | others - winding stem |
| 82833870 | others - case ring |
| 2K010011XB14 | others - dial |
| 2K010011XG14 | others - dial |
| 2K010011XN14 | others - dial |
| 2K010021XS29 | others - dial |
| 2K010031XS29 | others - dial |
| 2K010121 | others - case back |
| 2K01012125 | others - case |
| 2K01012129 | others - case |
| 2K0110 | others - machine code |
| A180BS | others - push pin |
| 11SC17T1 | others - second hand |
| 2AC110A1BCA | others - minute hand |
| 11P11CGM | others - minute hand |
| 2AC110A1BAA | others - minute hand |
| 1AC080A1BAA | others - hour hand |
| 11P11AGH | others - hour hand |
Caliber 2K01
