Watch WinderMovement reserves / Grand Seiko movement power reserves
Reference
Grand Seiko movement power reserves
5 Grand Seiko movements, from the Grand Seiko 9RA2 Spring Drive (120 hours) to the Grand Seiko 9S85 (55 hours).
| Movement | Winding | Reserve |
|---|---|---|
| Grand Seiko 9RA2 Spring Drive Review Grand Seiko Evolution 9 SLGA, SLGA009, Lake Suwa SLGA021 | Automatic | 120h |
| Grand Seiko 9SA5 Review Grand Seiko Evolution 9 SLGH, White Birch, White Birch SLGH005 | Automatic | 80h |
| Grand Seiko 9R65 Spring Drive Review Grand Seiko Snowflake SBGA211, Grand Seiko Snowflake, SBGA011 | Automatic | 72h |
| Grand Seiko 9S65 Review Grand Seiko SBGR, SBGR253, SBGR251 | Automatic | 72h |
| Grand Seiko 9S85 Review Grand Seiko Hi-Beat SBGH, SBGH201, SBGH289 | Automatic | 55h |
FAQ
Which Grand Seiko movement has the longest power reserve?
The Grand Seiko 9RA2 Spring Drive, at about 120 hours (about 5 days).
How long does a Grand Seiko watch run off the wrist?
Between 55 and 120 hours from full, depending on the movement. Look yours up in the table.
Never let one stop
Watch Winder knows all of these movements. Add your watches by name and it counts down each one's reserve, then reminds you before any of them stops.