The Seiko 1230-5909 is a watch model based on the 1230 movement.
Parts List
| REHN21SN01 | crystal |
| REHN21SN | crystal |
| 25N07DA1 | crown |
| 0F200NA11 | case back gasket |
| 0F200NA1 | case back gasket |
| Z1489C | band |
| 81611039 | band - bracelet fixing pin |
| Z1489G-LKG | band - link |
| Z1489G | band |
| Z1489G-PB1 | clasp - parts for buckle/clasp |
| Z1489G-BK7G | clasp - clasp |
| 82812170 | others - case ring |
| 81181919 | others - bracelet fixing pipe |
| 12301230X919 | others - dial |
| 12305909 | others - case back |
| 1230590925 | others - case |
| 123090 | others - machine code |
| DZ0040B01 | others - crown and stem gasket |
| 0351117 | others - winding stem |
| 07L41VGM | others - minute hand |
| 1CA047A1BAA | others - hour hand |
| 07L41VGH | others - hour hand |
Caliber 1230
