The Seiko 4N20-1050 is a watch model based on the 4N20 movement.
Parts List
| 25M45DEA | crown - crown |
| 0H1500B01 | case back gasket - case back gasket |
| WC39BW | band - band |
| 1CA035A1BNG | others - hour hand (lower) |
| 2CA052A1BDG | others - minute hand |
| 0351155 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 4N20105043A | others - case |
| 4N201700XG14 | others - dial |
| 4N2061 | others - machine code |
| A110AS | others - push pin |
| 82833415 | others - case ring |