The Seiko 5A70-5550 is a watch model based on the 5A70 movement.
Parts List
| ESMN18SN01 | crystal |
| 25M02NE3 | crown - crown |
| 0H1750N01 | case back gasket |
| 06VB6JGH | others - hour hand |
| 06VB6JGM | others - minute hand |
| WI323 | others - other band |
| DZ0041B01 | others - crown and stem gasket |