The Seiko 5Y23-8210 is a watch model based on the 5Y23 movement.
Parts List
| 295W24GN00 | crystal |
| 40M78NA1 | crown - crown |
| FH2980B0 | case back gasket |
| FH2980B0A | case back gasket - case back gasket |
| 86178440 | crystal gasket - plastic gasket for crystal |
| 86179411 | bezel gasket - plastic gasket for bezel |
| Z1561D-LKG | band - link |
| Z1561W-LKG | band - link |
| Z1561D | band |
| Z1561W | band |
| Z1561W-PB1 | clasp - parts for buckle/clasp |
| Z1561D-PB1 | clasp - parts for buckle/clasp |
| Z1561W-BK1S | clasp - clasp |
| Z1561D-BK1S | clasp - clasp |
| 0351672 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 82800261 | others - case ring |
| 0801722 | others - date dial |
| 0866567 | others - holding ring for dial |
| 5Y238210 | others - case back |
| 5Y23821098 | others - case |
| 5Y23821098Z | others - case |
| 5Y23829LXN14 | others - dial |
| 5Y23829WXN14 | others - dial |
| 5Y239 | others - machine code |
| 82352741 | others - bezel |
| 13SC04A2 | others - second hand |
| 12C76PGM | others - minute hand |
| 1AB080L0BKA | others - hour hand |
| 0Z0060B01 | others - crown and stem gasket |
| 12CA0KGH | others - hour hand |