The Seiko 7N42-9A00 is a watch model based on the 7N42 movement.
Parts List
| 300WG2JN01 | crystal |
| 8M45A6SNW1 | crown - crown |
| 8M45A6NNG1 | crown |
| 8M45A6NNG2 | crown |
| FH3081B01 | case back gasket |
| 86581061 | crystal gasket - plastic gasket for crystal |
| 86178450 | bezel gasket - plastic gasket for bezel |
| B1881J | band |
| B1881J-LKS | band - link |
| B1881K-LKG | band - link |
| B1881L | band - metal band |
| B1881L-LKG | band - link |
| B1881K | band |
| B1881M | band |
| B1881L-PB1 | clasp - parts for buckle/clasp |
| B1881L-BK2S | clasp - clasp |
| B1881K-PB1 | clasp - parts for buckle/clasp |
| B1881J-BK2S | clasp - clasp |
| B1881J-PB1 | clasp - parts for buckle/clasp |
| B1881K-BK2G | clasp - clasp |
| B1881K-EPG | others - endpiece |
| B1881J-EPS | others - endpiece |
| B1881L-EPG | others - endpiece |
| 0351892 | others - winding stem |
| 82824420 | others - case ring |
| 0878580 | others - date dial |
| 0878587 | others - date dial |
| 0878588 | others - date dial |
| 7N423 | others - machine code |
| 7N429A00 | others - case back |
| 7N429A0061Z | others - case |
| 7N429A0075Z | others - case |
| 7N429A0098Y | others - case |
| 7N429A0098Z | others - case |
| 7N429A08XB13 | others - dial |
| 7N429A08XG14 | others - dial |
| 7N429A08XN14 | others - dial |
| 7N429A08XS13 | others - dial |
| 7N429A18XS19 | others - dial |
| 82285561 | others - bezel |
| 82285564 | others - bezel |
| 82285569 | others - bezel |
| A190BS | others - push pin |
| 12ST20TS | others - second hand |
| 12ST20TG | others - second hand |
| AD006BA12 | others - crown gasket |
| 2BB125L0BCC | others - minute hand |
| 2BB125L0BCE | others - minute hand |
| 2BB125L0BCF | others - minute hand |
| 2AB125L8BCA | others - minute hand |
| 1AB080L2BCC | others - hour hand |
| 1AB080L2BCE | others - hour hand |
| 1AB080L2BCF | others - hour hand |
| 1AB080L6BCA | others - hour hand |