The Seiko 7N42-0BN0 is a watch model based on the 7N42 movement.
Parts List
| 310P22JN02 | crystal - crystal |
| 8K50D8SNW1 | crown - crown |
| 0F280BAD2 | case back gasket - case back gasket |
| 86565100 | crystal gasket - plastic gasket for crystal |
| 86178710 | bezel gasket - plastic gasket for bezel |
| D220AB | band - band |
| D220AB-LK00 | band - link |
| D220AB-BK00 | clasp - clasp |
| D220AB-BKLK-12H | clasp - parts for buckle/clasp |
| D220AB-BKLK-6H | clasp - parts for buckle/clasp |
| 3AA135F0AAB | others - second hand |
| 3AA135F0ANS | others - second hand |
| 1BA087L0BEB | others - hour hand |
| 2BA130L0BEB | others - minute hand |
| 1BA087L0BES | others - hour hand |
| 2BA130L0BES | others - minute hand |
| 0878617 | others - date dial |
| 0878618 | others - date dial |
| 7N420CY0XB19 | others - dial |
| 7N420CY0XG19 | others - dial |
| 7N423 | others - machine code |
| 7N420BN0 | others - case back |
| 0351892 | others - winding stem |
| 82737920 | others - case ring |
| 7N420BN001A | others - case |
| 85940749 | others - bezel |
| D220AB-BKPP | others - spring bar for buckle/clasp |
| D220AB-EP00 | others - endpiece |
| D220AB-LKPN | others - pin for link |
| S200BS | others - push pin |
| AD006BAD1 | others - crown and stem gasket |