The Seiko 7T42-7A5B is a watch model based on the 7T42 movement.
Parts List
| 295W30JN01 | crystal |
| 35ML0NA1 | crown |
| 0351580 | crown - winding stem |
| 40ME2NA4 | crown |
| 0A2800B01 | case back gasket |
| 86572420 | crystal gasket - plastic gasket for crystal |
| 86179271 | bezel gasket - plastic gasket for bezel |
| 80603381 | pusher |
| Z1630G-LKG | band - link |
| Z1630G | band |
| Z1630G-BK2G | clasp - clasp |
| Z1630G-PB1 | clasp - parts for buckle/clasp |
| 04EC2AG | hand - sub hand |
| 04Y36AGH | hand - hour hand |
| 0866599 | others - holding ring for dial |
| 0878528 | others - date dial |
| 7T424 | others - machine code |
| 7T427A5B | others - case back |
| 7T427A5B75 | others - case |
| 7T427A7LX944 | others - dial |
| 82280823 | others - bezel |
| 84322547 | others - dial ring |
| 86510089 | others - conducting plate |
| A190BS | others - push pin |
| 81400709 | others - button spring clip |
| 81350540 | others - button spring |
| EG0060B01 | others - button gasket |
| Z1630G-EPG | others - endpiece |
| 03E16HG | others - (hand(special)) |
| 0Z0060B01 | others - crown and stem gasket |
| 12CD6LGM | others - minute hand |
| 12CD6LGH | others - hour hand |
| 12SCA6HA | others - second hand |
Caliber 7T42
Other models with the same movement
| 7T42-6A00 |
| 7T42-6A0A |
| 7T42-6A0B |
| 7T42-6A10 |
| 7T42-6A20 |
| 7T42-6A49 |
| 7T42-6A50 |
| 7T42-6A5A |
| 7T42-6A60 |
| 7T42-6A6A |
| 7T42-7A00 |
| 7T42-7A10 |
| 7T42-7A20 |
| 7T42-7A2A |
| 7T42-7A39 |
| 7T42-7A40 |
| 7T42-7A4A |
| 7T42-7A4B |
| 7T42-7A50 |
| 7T42-7A5A |
| 7T42-F010 |
| 7T42-F01A |