The Seiko 4N00-5950 is a watch model based on the 4N00 movement.
Parts List
| ES2A39JN02 | crystal |
| ES2A39JN | crystal |
| 6M30B5NNG0 | crown - crown |
| 6M30B7NNG0 | crown |
| 6M30B7NNG1 | crown - crown |
| 6M30B5NN | crown |
| 0H1600B01 | case back gasket - case back gasket |
| 0H1600B0 | case back gasket |
| Z5490E-LKG | band - link |
| Z5490P-LKG | band - link |
| Z5491G-LKG | band - link |
| Z5490E | band |
| Z5490P | band |
| Z5491G | band |
| Z5491G-PB1 | clasp - parts for buckle/clasp |
| Z5490P-PB1 | clasp - parts for buckle/clasp |
| Z5491G-BK4G | clasp - clasp |
| Z5490E-PB1 | clasp - parts for buckle/clasp |
| Z5490P-BK4G | clasp - clasp |
| Z5490E-BK4G | clasp - clasp |
| 1CE035L0BDG | others - hour hand |
| 2CE052L0BDG | others - minute hand |
| 0351155 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 81181879 | others - bracelet fixing pipe |
| 81611009 | others - bracelet fixing pin |
| 4N002930XS14 | others - dial |
| 4N002930XS24 | others - dial |
| 4N003120XB14 | others - dial |
| 4N003120XS14 | others - dial |
| 4N005950 | others - case back |
| 4N00595025A | others - case |
| 4N00595025B | others - case |
| 4N00595025C | others - case |
| 4N0061 | others - machine code |
| 82861190 | others - case ring |