Click to inspect
Grand Seiko SBGA427
Case
- Diameter
- 39mm
- Thickness
- 12.3mm
- Lug-to-lug
- 46.8mm
- 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
- textured
- Sub-dials
- 1
- Bezel
- fixed
- Bracelet
- lug-attached
- Hands
- dauphine
AI-detected from the product image
SBGA427 collection · 21 watches
2 colorways
The connection engine
More like this.
The community take
Owners talk.
Grand Seiko SBGA427 owners widely praise its extensive Zaratsu polishing and the "hall of mirrors" effect created by its diamond-cut indexes, complemented by a subtle, reeded dial and a striking green seconds hand. The 39mm case is noted for its comfortable, tapered bracelet, and the 9R65 Spring Drive movement is visible through the caseback. Some owners report the highly polished Zaratsu finish is prone to scuffs and scratches, with one mentioning a scratch near 1 o'clock. The Grand Seiko SBGA427 sold for $3750. Overall, owners rate the Grand Seiko SBGA427 highly for its exceptional finishing and the unique visual appeal of its dial and indexes.
Synthesized from 3 sources
On real wrists
No shots yet. Show how it wears.
The paper trail
The discussion