The Seiko 1M20-5A70 is a watch model based on the 1M20 movement.
Parts List
RE3A10JR02 | crystal - crystal |
8Z50A2STWA | crown - crown |
8Z50A2STWB | crown - crown |
0H019BAD2 | case back gasket - crown and stem gasket |
0F210NA1S | case back gasket - case back gasket |
4695AB-LK6 | band - link |
4H54AB | band - band |
4695AB | band - band |
4695AB-BKX | clasp - buckle |
4695AB-PB2 | clasp - parts for buckle |
1CG042S0BDS | others - hour hand |
2CG057S0BDS | others - minute hand |
82839600 | others - case ring |
81612029 | others - bracelet fixing pin |
1M205A70 | others - case back |
1M205A7061A | others - case |
4H54AB-EP9 | others - endpiece |
81504269 | others - screw |
0351555 | others - winding stem |
1M205A7061 | others - case |
81504289 | others - case back screw |
1M200B10XB13 | others - dial |
1M200B10XG13 | others - dial |
1M201 | others - machine code |
4695AB-EP1 | others - endpiece |
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 |
1M20-0A40 |
1M20-0A50 |
1M20-0A60 |
1M20-0A70 |
1M20-5A00 |
1M20-5A10 |
1M20-5A20 |
1M20-5A30 |
1M20-5A40 |
1M20-5A50 |
1M20-5A60 |
1M20-5A80 |
1M20-5A90 |
1M20-5B00 |