The Seiko D138-4000 is a watch model based on the D138 movement.
Parts List
| ES2W26GM01 | crystal |
| ES2W26GM02 | crystal - crystal |
| 0J3000N01 | case back gasket - case back gasket |
| 86561220 | crystal gasket - plastic gasket for crystal |
| 80613069 | pusher - button |
| NA14A | band - band |
| EG0060B01 | others - button gasket |
| 83200271 | others - button spring clip |
| 89900320 | others - spacer |
| A200CS | others - push pin |
| D1383 | others - machine code |
| D138400062A | others - case |
Other models with the same movement
| D138-4009 |
| D138-4010 |
| D138-4020 |
| D138-5000 |
| D138-5010 |
| D138-5030 |
| D138-5040 |
| D138-5050 |