The Seiko 4N20-0150 is a watch model based on the 4N20 movement.
Parts List
| 140P01SN03 | crystal |
| 30E33NA1 | crown |
| 0F155BAA3 | case back gasket - case back gasket |
| AC004BAA1 | case back gasket - crown and stem gasket |
| 86592290 | crystal gasket |
| TB09A | band - metal band |
| TB11A | band - metal band |
| 05Y45DGH | others - hour hand |
| 0351155 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81181459 | others - bracelet fixing pipe |
| 81607039 | others - bracelet fixing pin |
| 82840910 | others - case ring |
| 4N200150 | others - case back |
| 4N20015075 | others - case |
| 4N200150SA | others - case |
| 4N200320XS24 | others - dial |
| 4N200320XS34 | others - dial |
| 4N2061 | others - machine code |
| 05Y45DGM | others - minute hand |