The Seiko 4N20-0170 is a watch model based on the 4N20 movement.
Parts List
| 175Y01LV02 | crystal - crystal |
| 30M57NA1 | crown - crown |
| 0H1600B01 | case back gasket - case back gasket |
| AC004BA11 | case back gasket - crown and stem gasket |
| 86567330 | crystal gasket - plastic gasket for crystal |
| 0H150BA91 | bezel gasket - bezel gasket |
| MK21E | band - band |
| 89941830 | band - other |
| 07Y11JSH | others - hour hand |
| 07Y11JSM | others - minute hand |
| 1CE047LABDS | others - hour hand |
| 2CE070LABDS | others - minute hand |
| A120BS | others - push pin (for lb) |
| 4N200340XS14 | others - dial |
| 4N2062 | others - machine code |
| 4N20017025 | others - case |
| 82310191 | others - bezel |
| 4N200170 | others - case back |
| 82841030 | others - case ring |
| 0351156 | others - winding stem |