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Grand Seiko SBGA375
Case
- Diameter
- 40mm
- Thickness
- 12.5mm
- Lug-to-lug
- 46.2mm
- Lug width
- 19mm
- Material
- Stainless Steel
- Water resistance
- 100m
Crystal & dial
- Crystal
- Sapphire
- AR coating
- Yes
Movement
- Caliber
- Grand Seiko 9R65
- Type
- Spring Drive
- Power reserve
- 72h
- Hacking
- No
- Hand-winding
- No
- Complications
- Time only
Grand Seiko
Grand Seiko's Spring Drive caliber combines a mechanical mainspring with an electronic regulator to achieve a perfectly smooth gliding seconds hand and accuracy of plus or minus 1 second per day. The Tri-synchro regulator uses the energy of the mainspring to generate electricity that powers the quartz oscillator and IC, eliminating the need for a battery. A 72-hour power reserve and 30 jewels make it one of the most technologically unique movements in horology.
Design language
- Case shape
- round
- Dial style
- sunburst
- Bezel
- fixed
- Bracelet
- lug-attached
- Hands
- dauphine
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SBGA375 collection · 21 watches
9 colorways
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The community take
Owners talk.
Grand Seiko SBGA375 owners praise its classic, subtle design and the engineering of its Spring Drive movement, with one noting it "does not fail to deliver what they are known for." The dial offers good legibility, with polished side bevels on the hour markers catching light well. However, one owner scuffed the bezel within a week, and another questioned if a lug was missing. Overall, owners rate the Grand Seiko SBGA375 highly for its refined design and movement engineering, signaling discerning taste.
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