The Seiko 2Y00-5550 is a watch model based on the 2Y00 movement.
Parts List
| SAJN13JN01 | crystal |
| SAJN13JN | crystal |
| 32M61NN1 | crown |
| 0H1700B01 | case back gasket - bezel gasket |
| 0H1700B0 | case back gasket |
| Z5394C-LKG | band - link |
| Z5394G-LKG | band - link |
| Z5330C | band |
| Z5394C | band |
| Z5330G | band |
| Z5394G | band |
| Z5394G-BK4G | clasp - clasp |
| Z5394C-BK4G | clasp - clasp |
| DZ0040B01 | others - crown and stem gasket |
| 0351236 | others - winding stem |
| 81180249 | others - bracelet fixing pipe |
| 81611339 | others - bracelet fixing pin |
| 2Y002500XS14 | others - dial |
| 2Y002510XG14 | others - dial |
| 2Y002510XS14 | others - dial |
| 2Y005550 | others - case back |
| 2Y00555025 | others - case |
| 2Y0055502H | others - case |
| 2Y0065 | others - machine code |
| 82831630 | others - case ring |
| 05Y15NGM | others - minute hand |
| 05Y43NGM | others - minute hand |
| 05Y15NGH | others - hour hand |
| 05Y43NGH | others - hour hand |
| 05Y07DGH | others - hour hand |
| 05Y07DGM | others - minute hand |
Caliber 2Y00
