The Grand Seiko caliber 9R31 is a Spring Drive Manual movement. It is part of the 9R family of movements and it was introduced in 2019.
![9R31](https://www.theseikoguy.com/media/cal/9r31.jpg)
Caliber | 9R31 |
Type | Spring Drive Manual |
Family | 9R |
Year | 2019 |
Grand Seiko watches with caliber 9r31
![SBGY002](/media/grandseiko/th/SBGY002.jpg)
SBGY002
Case reference: 9R31-0AA0
Type: Spring Drive Manual
Movement: 9R31
Case material: Yellow Gold
Year: 2019
![SBGY003](/media/grandseiko/th/SBGY003.jpg)
SBGY003
Case reference: 9R31-0AB0
Type: Spring Drive Manual
Movement: 9R31
Case material: Stainless Steel
Year: 2019
![SBGY005](/media/grandseiko/th/SBGY005.jpg)
SBGY005
Case reference: 9R31-0AC0
Type: Spring Drive Manual
Movement: 9R31
Case material: Stainless Steel
Year: 2020
![SBGY007](/media/grandseiko/th/SBGY007.jpg)
SBGY007
Case reference: 9R31-0AD0
Type: Spring Drive Manual
Movement: 9R31
Case material: Stainless Steel
Year: 2021
![SBGY008](/media/grandseiko/th/SBGY008.jpg)
SBGY008
Case reference: 9R31-0AE0
Type: Spring Drive Manual
Movement: 9R31
Case material: Rose Gold
Year: 2022