The Seiko 4N00-0520 is a watch model based on the 4N00 movement.
Parts List
| 175P01LN03 | crystal |
| 175P01LN | crystal |
| 6M35B1NNG0 | crown |
| 6M35B1NN | crown |
| 0F150BAA | case back gasket |
| 0F150BAA5 | case back gasket - case back gasket |
| 86173361 | crystal gasket |
| 86590910 | bezel gasket - plastic gasket for bezel |
| G5179C-LKG | band - link |
| G5179G-LKG | band - link |
| G5179C | band |
| G5179G | band |
| G5179G-BK4G | clasp - clasp |
| G5179C-BK4G | clasp - clasp |
| DZ0040B01 | others - crown and stem gasket |
| 0351155 | others - winding stem |
| 81181459 | others - bracelet fixing pipe |
| 81607199 | others - bracelet fixing pin |
| 82841030 | others - case ring |
| 4N000520 | others - case back |
| 4N00052075 | others - case |
| 4N0005207L | others - case |
| 4N000521 | others - case back |
| 4N001860XS14 | others - dial |
| 4N001860XS24 | others - dial |
| 4N001880XS19 | others - dial |
| 4N0061 | others - machine code |
| 82353251 | others - bezel |
| 2CB075AABAL | others - minute hand |
| 2CA075AABAL | others - minute hand |
| 2CB075AABAA | others - minute hand |
| 1CB050AABAL | others - hour hand |
| 1CX052FABAL | others - hour hand |
| 1CB050AABAA | others - hour hand |