The Seiko 4N21-1190 is a watch model based on the 4N21 movement.
Parts List
| 190A25SN02 | crystal - crystal |
| 30E31NA7 | crown - crown |
| 0F170BAA1 | case back gasket |
| AC004BAA1 | case back gasket - crown and stem gasket |
| DC13BW | band - band |
| 3BA075F1BNG | others - second hand |
| A110BS | others - push pin (for mb) |
| 4N212800XS14 | others - dial |
| 4N2164 | others - machine code |
| 1BA050A1BAF | others - hour hand |
| 82832995 | others - case ring |
| 4N21119075A | others - case |
| 4N211190 | others - case back |
| 0351155 | others - winding stem |
| 2BA075A1BAF | others - minute hand |