The Seiko 7N42-8A59 is a watch model based on the 7N42 movement.
Parts List
| 290PX6TNC3 | crystal - crystal |
| 1E50A0TNA1 | crown - crown |
| FH3380B0A | case back gasket - case back gasket |
| 86565321 | crystal gasket - plastic gasket for crystal |
| 4642ZG | band - band |
| 4642ZG-LK9 | band - link |
| 4642ZG-BKL | clasp - buckle |
| 4642ZG-PB1 | clasp - parts for buckle |
| 1AX075F0BSF | others - hour hand |
| 2AX105F0BSF | others - minute hand |
| 3AX135F0AS9 | others - second hand |
| 81601169 | others - bracelet fixing pin |
| 81180109 | others - bracelet fixing pipe |
| 82838840 | others - case ring |
| 0Z3214B02 | others - rotating bezel gasket |
| 0878580 | others - date dial |
| 86312444 | others - rotating bezel |
| 7N428A59 | others - case back |
| 7N428A59WFZ | others - case |
| 7N423 | others - machine code |
| 7N428B48XB13 | others - dial |
| 81332049 | others - click spring |
| 0A0150B0A | others - crown and stem gasket |
| 89995390 | others - pusher spacer |