The Seiko 4N20-0340 is a watch model based on the 4N20 movement.
Parts List
| 160A02SN01 | crystal - crystal |
| 35MY5DA4 | crown |
| 35MY5DA5 | crown |
| 35MY5DA6 | crown |
| 0F140BAA3 | case back gasket - case back gasket |
| B5631 | band - metal band |
| B5632 | band - metal band |
| B5633 | band - metal band |
| 06Y17JGM | others - minute hand |
| 81181459 | others - bracelet fixing pipe |
| 81611459 | others - bracelet fixing pin |
| 82833415 | others - case ring |
| 4N200340 | others - case back |
| 4N200340X1A | others - case |
| 4N200340X1B | others - case |
| 4N200340ZXA | others - case |
| 4N200580XS14 | others - dial |
| 4N200580XS24 | others - dial |
| 4N200580XS34 | others - dial |
| 4N2061 | others - machine code |
| 82361195 | others - bezel |
| 82361196 | others - bezel |
| 82361197 | others - bezel |
| DZ0040B01 | others - crown and stem gasket |
| 0351155 | others - winding stem |
| 06Y59JCH | others - hour hand |
| 160A02SN01 | crystal - crystal |
| 35MY5DA4 | crown |
| 35MY5DA5 | crown |
| 35MY5DA6 | crown |
| 0F140BAA3 | case back gasket - case back gasket |
| B5631 | band - metal band |
| B5632 | band - metal band |
| B5633 | band - metal band |
| 06Y17JGM | others - minute hand |
| 81181459 | others - bracelet fixing pipe |
| 81611459 | others - bracelet fixing pin |
| 82833415 | others - case ring |
| 4N200340 | others - case back |
| 4N200340X1A | others - case |
| 4N200340X1B | others - case |
| 4N200340ZXA | others - case |
| 4N200580XS14 | others - dial |
| 4N200580XS24 | others - dial |
| 4N200580XS34 | others - dial |
| 4N2061 | others - machine code |
| 82361195 | others - bezel |
| 82361196 | others - bezel |
| 82361197 | others - bezel |
| DZ0040B01 | others - crown and stem gasket |
| 0351155 | others - winding stem |
| 06Y59JCH | others - hour hand |