Grand Seiko Automatic SBGR051 Power Reserve 72Hr
- Seiko has not stopped to evolve Grand Seiko's quality since 1998, when Seiko
restarted to produce Grand Seiko automatic.
- You could find an ultimate SEIKO technology for 9S65 Movement here.
- 1. Change the automatic winding mechanism from (Seiko Original) Magic lever system to Reverser system, then the efficiency of winding system was improved.
- 2. Changed the material of hair spring (Spron 610) -- Shock resistance efficiency was improved.
- 3. Changed the design of the scape wheel & the ancre (SEIKO Technology MEMS). , light weight and extremely precise.
etc.....
A list of references