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Seiko
Grand Seiko
SBGJ251
Specifications
Case Diameter
39.5mm
Lug to Lug
46.9mm
Thickness
14.1mm
Lug Width
19mm
Material
Stainless Steel
Dial
Green
Movement
Automatic
Caliber
9S86
Crystal
Sapphire
Power Reserve
55h
Strap
Steel Bracelet
Pricing & Fit Summary
With a lug-to-lug measurement of 46.9mm, this reference is generally recommended for wrist sizes 14.1cm and larger. Note: fit is determined by lug-to-lug distance (46.9mm), not case diameter (39.5mm).
- 39.5mm
- Diameter
- 46.9mm
- Lug to Lug
- 14.1mm
- Thickness
- 19mm
- Lug Width
- Caliber
- 9S86
- Movement
- Automatic
- Crystal
- Sapphire
- Power Reserve
- 55h
- Case Material
- Stainless Steel
- Dial
- Green
- Strap
- Steel Bracelet
- Introduced
- 2021
Perceived Size
How it wears, not just how it measures
~49mm
vs 47mm L2L
Compact (36mm)Substantial (60mm)
↑ 14.1mm case thickness adds +2.1mm wrist presence
Will this fit your wrist?
Slide to your wrist circumference to see the fit diagram.
Wrist circumference17 cm
12cm17cm (avg)22cm