The Seiko 7N00-521H is a watch model based on the 7N00 movement.
Parts List
| BA0A09H20B | crystal |
| BA0A09H2 | crystal |
| 8M30A7NNG0 | crown |
| 8M30A7NN | crown |
| 0H2600B01 | case back gasket - case back gasket |
| L1003G | band |
| L1003G-LKG | band - link |
| L1003G-BK7S | clasp - buckle |
| L1003G-PB1 | clasp - parts for buckle |
| 7N000 | others - machine code |
| 7N00521H | others - case back |
| 7N00521H26 | others - case |
| 7N005230XS19 | others - dial |
| A190AS | others - push pin |
| L1003G-EP1 | others - endpiece |
| 0351890 | others - winding stem |
| 82843690 | others - case ring |
| 1AA055A1BAA | others - hour hand |
| 2AA080A1BAA | others - minute hand |
| AD006BA12 | others - crown gasket |