The Seiko 2Y01-0031 is a watch model based on the 2Y01 movement.
Parts List
| 170W21LN | crystal |
| 170W21LN01 | crystal |
| 30M87NN1 | crown |
| 30M87NS1 | crown |
| FE178BA1 | case back gasket |
| FE178BA11 | case back gasket |
| 86590170 | crystal gasket - plastic gasket for crystal |
| 86590990 | crystal gasket - plastic gasket for crystal |
| ZHA09G | band - leather band |
| ZHA09S | band - leather band |
| ZHJ21G | band - leather band |
| 06T13NSM | hand - minute hand |
| 1BA047A1BNS | hand - hour hand |
| 2BA067A1BNS | hand - minute hand |
| 3BA075F1BNG | others - second hand |
| 3BA075F1BNS | others - second hand |
| 1BC045A1BAA | others - hour hand |
| 07SC25NG | others - second hand |
| A120BS | others - push pin (for lb) |
| 06T03DGM | others - minute hand |
| 2Y010030 | others - case back |
| 2Y01003161 | others - case |
| 2Y01003175 | others - case |
| 2Y010480XG14 | others - dial |
| 2Y010480XS13 | others - dial |
| 2Y010490XS19 | others - dial |
| 2Y010500XS14 | others - dial |
| 2Y0165 | others - machine code |
| 82821950 | others - case ring |
| 0D005BA11 | others - (crowndichtung) |
| 1BA047A1BNG | others - hour hand |
| 06T09AGM | others - minute hand |
| 2BA060A1BDG | others - minute hand |
| 2BA067A1BNG | others - minute hand |
| 2BC065A1BAA | others - minute hand |
| 07SC25NS | others - second hand |
Caliber 2Y01
