The Seiko Y100-4159 is a watch model based on the Y100 movement.
Parts List
| SADN86LN01 | crystal |
| 35M98NF1 | crown |
| 0A2600B01 | case back gasket |
| 0G0055B01 | case back gasket - crown and stem gasket |
| 0A2600B | case back gasket |
| 338MC | band - metal band |
| 338MC-BK5G | clasp - clasp |
| 82718240 | others - case ring |
| Y10041592S | others - case |
| Y1004590XG14 | others - dial |
| 08C88NGH | others - hour hand |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 0354765 | others - winding stem |
| 08C88NGM | others - minute hand |