The Seiko 5P31-5A70 is a watch model based on the 5P31 movement.
Parts List
| SA8W20HN01 | crystal |
| 35M82NA1 | crown - crown |
| 0A2500N01 | case back gasket - rotating bezel gasket |
| 0A2500N | case back gasket |
| 86573580 | crystal gasket - plastic gasket for crystal |
| Z1313C | band - metal band |
| Z1313C-LKG | band - link |
| Z1313G | band - metal band |
| Z1313G-LKG | band - link |
| Z1313G-PB1 | clasp - parts for buckle/clasp |
| Z1313G-BK4G | clasp - clasp |
| Z1313C-PB1 | clasp - parts for buckle/clasp |
| Z1313C-BK4S | clasp - clasp |
| 09T04N1H | others - hour hand |
| 0351670 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 5P315A7075 | others - case |
| 5P315A70SA | others - case |
| 5P315A90XG14 | others - dial |
| 5P315A90XN14 | others - dial |
| 5P319 | others - machine code |
| 82801620 | others - case ring |
| 2BA090A0BNG | others - minute hand |
| 13SC04A2 | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
| 09T18NGM | others - minute hand |