The Seiko 1N00-6B20 is a watch model based on the 1N00 movement.
Parts List
| ES0A30JR02 | crystal - crystal |
| ES0A30JR | crystal |
| 30MA2NA1 | crown - crown |
| 30MA2ND1 | crown |
| 0E200NA1S | case back gasket - case back gasket |
| B5740N | band - (nl) |
| B5740X | band - band |
| B5740L | band - metal band |
| B5740L-LKG | band - link |
| B5740N-LKG | band - link |
| B5740X-LKG | band - link |
| B561AAL | band - (ersatz) nl |
| B5740X-BK4G | clasp - buckle |
| B5740N-BK4G | clasp - clasp |
| B5740L-BK4G | clasp - clasp |
| 1N006B20JJZ | others - case |
| 1N006B20 | others - case back |
| 1N003J58XG14 | others - dial |
| 1N006B202HZ | others - case |
| 1N006B20JJY | others - case |
| 1N009 | others - machine code |
| A120AS | others - push pin |
| 82832200 | others - case ring |
| 0351807 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |
| 2CE047L0BDG | others - minute hand |
| 04Y09DGM | others - minute hand |
| 1CE030L2BDG | others - hour hand |
| 04V02DGH | others - hour hand |
Caliber 1N00
