Watch Almanac
Grand Seiko

Heritage 9F Quartz 37mm

Ref. SBGX261

Case diameter
37 mm
Manufacturer spec
Lug-to-lug
44.6 mm
Manufacturer spec
Thickness
10 mm
Manufacturer spec
Lug width
19 mm
Manufacturer spec

Retail price $2,700 (US, Oct 2026)

Ideal fit
Wrist flat: 55.1 mmLug-to-lug: 44.6 mm

How the Heritage 9F Quartz 37mm wears

Its lugs add 7.6 mm to the 37 mm case, close to the 7.1 mm typical across the almanac, so its diameter is a fair guide to how it wears.

On our fit model it sits best on wrists from 6.25" to 7.5" (15.9–19.1 cm); below 6.25" the lugs start to reach the edge of the wrist.

At 10 mm thick it is slimmer than 83% of the 80 other everyday watches we've measured, so it slides under a cuff more easily than most.

Its 19 mm lug width is one of the most common strap sizes; 21 other watches here share it, so aftermarket straps are easy to find.

Will the Heritage 9F Quartz 37mm fit your wrist?

With a 44.6 mm lug-to-lug, here is how it wears across common wrist sizes. We estimate the flat top of each wrist from its circumference; measure yours for a closer answer in the fit finder.

WristFlat width (est.)Fit
6"47.2 mmSnug, lugs near the edge
6.5"51.2 mmIdeal fit
7"55.1 mmIdeal fit
7.5"59.1 mmIdeal fit
8"63 mmWears small

Specifications

Reference
SBGX261
Collection
Heritage
Status
In production
Case material
stainless steel
Crystal
sapphire
Water resistance
100 m
Bezel
steel
Strap / bracelet
stainless steel bracelet, folding clasp
Weight
134 g
Style
Everyday, Dress

Movement

Caliber
Grand Seiko 9F62
Type
quartz
Accuracy
+/-10 s/year

Takes 19 mm straps. See other 19 mm watches and straps.

More Heritage references

Watches that wear the same size

Other watches within 1.5 mm of its lug-to-lug.

Same 19 mm lug width

All 19 mm watches

These take the same straps as the Heritage 9F Quartz 37mm.

Sources