The Seiko 4N01-0250 is a watch model based on the 4N01 movement.
Parts List
| 185P01H20A | crystal |
| 185P01H2 | crystal |
| 35MR9NN1 | crown |
| 0F155BAA5 | case back gasket |
| 0F155BAA | case back gasket |
| 0F160BAA5 | case back gasket - case back gasket |
| 86561071 | crystal gasket |
| B5648H | band |
| B5648C-LKG | band - link |
| B5648H-LKG | band - link |
| B5648C | band |
| B5648H-BK4G | clasp - clasp |
| B5648C-BK4S | clasp - clasp |
| 3BA125F1BNG | others - second hand |
| DZ0040B01 | others - crown and stem gasket |
| 81181459 | others - bracelet fixing pipe |
| 81611239 | others - bracelet fixing pin |
| 4N010250 | others - case back |
| 4N0102507H | others - case |
| 4N010250WE | others - case |
| 4N010500XB14 | others - dial |
| 4N010500XL14 | others - dial |
| 4N0161 | others - machine code |
| 82843270 | others - case ring |
| 82846270 | others - case ring |
| 0351156 | others - winding stem |
| 08T27DGM | others - minute hand |
| 08SC29NG | others - second hand |
| 08T27DGH | others - hour hand |