The Seiko 1N01-0BY0 is a watch model based on the 1N01 movement.
Parts List
| RE6A92JN02 | crystal - crystal |
| 6K35B8SNW1 | crown - crown |
| 0F210BAD2 | case back gasket - case back gasket |
| D1V9AB | band - band |
| D1V9AB-LK00 | band - link |
| D1V9AB-BK00 | clasp - clasp |
| D1V9AB-BKLK-12H | clasp - parts for buckle/clasp |
| D1V9AB-BKLK-6H | clasp - parts for buckle/clasp |
| 3BA050F1BNS | others - second hand |
| 1BG030L0BDS | others - hour hand |
| 2BG042L0BDS | others - minute hand |
| 81606439 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 1N010BY001A | others - case |
| 82843660 | others - case ring |
| 1N010BY0 | others - case back |
| 1N010BY002A | others - case |
| 1N010EC0XA15 | others - dial |
| 1N010FY0XL13 | others - dial |
| 1N010FY0XZ13 | others - dial |
| 1N019 | others - machine code |
| 0351807 | others - winding stem |
| AC004BAD1 | others - crown and stem gasket |
| D1V9AB-BKPN | others - pin for buckle/clasp |
| D1V9AB-BKPP | others - spring bar for buckle/clasp |
| D1V9AB-LK01 | others - half adjust link |
| D1V9AB-LKPN | others - pin for link |
Caliber 1N01
