The Seiko 5Y23-7040 is a watch model based on the 5Y23 movement.
Parts List
| 280W56GN | crystal |
| 280W56GN00 | crystal |
| 35M82NA1 | crown - crown |
| 0A2600N01 | case back gasket - case back gasket |
| 86570560 | crystal gasket - plastic gasket for crystal |
| 86178600 | bezel gasket - plastic gasket for bezel |
| BPJ98K | band |
| BPJ98G | band |
| BPJ97G | band |
| 82800261 | others - case ring |
| 0801774 | others - date dial |
| 0866556 | others - holding ring for dial |
| 0878524 | others - date dial |
| 5Y23704075 | others - case |
| 5Y23704075A | others - case |
| 5Y237070XS29 | others - dial |
| 5Y237078XS19 | others - dial |
| 5Y239 | others - machine code |
| 82344601 | others - bezel |
| A180BS | others - push pin |
| 0351670 | others - winding stem |
| 13SC04A2 | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
| 11CR0FGM | others - minute hand |
| 11CR0FGH | others - hour hand |