The Seiko 4N00-0550 is a watch model based on the 4N00 movement.
Parts List
| 200A05JN02 | crystal - crystal |
| 200A05JN | crystal |
| 6M30A7NNG1 | crown - crown |
| 6M30A7NNG9 | crown |
| 0H1900B01 | case back gasket - case back gasket |
| 0H1900B0 | case back gasket |
| B5703B | band - metal band |
| B5703C | band |
| B5703C-LKS | band - link |
| B5703G-LKG | band - link |
| B5703M | band |
| B5703G | band |
| B5703C-BK4G | clasp - clasp |
| B5703G-BK4G | clasp - clasp |
| 1CA055A1BNG | others - hour hand |
| 2CA077A1BNG | others - minute hand |
| 0351155 | others - winding stem |
| 82840495 | others - case ring |
| 4N000550 | others - case back |
| 4N00055025 | others - case |
| 4N00055025L | others - case |
| 4N0005502H | others - case |
| 4N0005502HL | others - case |
| 4N001930XG14 | others - dial |
| 4N001930XS14 | others - dial |
| 4N0061 | others - machine code |
| B090BS | others - push pin |
| DZ0040B01 | others - crown and stem gasket |