The Seiko 7770-5220 is a watch model based on the 7770 movement.
Parts List
ESHN81S30A | crystal |
ESHN81SM02 | crystal |
25N49DX5 | crown - crown |
25N49DE5 | crown - crown |
25N49DE5C | crown |
25N49DX5C | crown |
0H2300N01 | case back gasket |
GI113 | others - other band |
GI154 | others - other band |
DZ0040B01 | others - crown and stem gasket |
12S07CSH | others - hour hand |
12S07CSM | others - minute hand |
12S07CAH | others - hour hand |