The Seiko 1M20-0A40 is a watch model based on the 1M20 movement.
Parts List
150A16JR02 | crystal - crystal (inorganic) |
8M40C0SNW1 | crown - crown |
0F200NA1S | case back gasket - case back gasket |
4648AZ | band - band |
4648JZ | band - metal band |
4648AZ-LK2 | band - link |
4648JZ-LK2 | band - link |
4648JZ-BKF | clasp - buckle |
4648AZ-BKL | clasp - buckle |
4648AZ-PB2 | clasp - parts for buckle |
1CH040A4BN1 | others - hour hand |
2CH062A2BD1 | others - minute hand |
81606439 | others - bracelet fixing pin |
81190055 | others - bracelet fixing pipe |
0351555 | others - winding stem |
82839200 | others - case ring |
1M200A4061 | others - case |
1M200A40 | others - case back |
1M200A70XE23 | others - dial |
1M201 | others - machine code |
AD006BA12 | others - crown gasket |
Caliber 1M20
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1M20A_caliber_en_1.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1M20A_caliber_en_2.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1M20A_caliber_en_3.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1M20A_caliber_en_4.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1M20A_caliber_en_5.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1M20A_caliber_en_6.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1M20A_caliber_en_7.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1M20A_caliber_en_8.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1M20A_caliber_en_9.jpg)
![Caliber manual page](https://www.theseikoguy.com/media/movements/1/1M20A_caliber_en_10.jpg)
Other models with the same movement
1M20-0A10 |
1M20-0A20 |
1M20-0A30 |
1M20-0A50 |
1M20-0A60 |
1M20-0A70 |
1M20-5A00 |
1M20-5A10 |
1M20-5A20 |
1M20-5A30 |
1M20-5A40 |
1M20-5A50 |
1M20-5A60 |
1M20-5A70 |
1M20-5A80 |
1M20-5A90 |
1M20-5B00 |