Watch Almanac
Casio

G-Shock GA-B001 Carbon Core

Ref. GA-B001-1A

Case diameter
46 mm
Manufacturer spec
Lug-to-lug
42.5 mm
Manufacturer spec
Thickness
13.8 mm
Manufacturer spec
Lug width
—
Not published

Retail price $84 (US, Oct 2026)

Ideal fit
Wrist flat: 55.1 mmLug-to-lug: 42.5 mm

How the G-Shock GA-B001 Carbon Core wears

Its lugs add only -3.5 mm to the 46 mm case, against 7 mm typical across the almanac, so it wears smaller than its diameter suggests.

On our fit model it sits best on wrists from 6" to 7" (15.2–17.8 cm); below 6" the lugs start to reach the edge of the wrist.

At 13.8 mm thick it is thicker than 83% of the 18 other digital watches we've measured, so expect it to sit tall on the wrist.

Will the G-Shock GA-B001 Carbon Core fit your wrist?

With a 42.5 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 mmIdeal fit
6.5"51.2 mmIdeal fit
7"55.1 mmIdeal fit
7.5"59.1 mmWears small
8"63 mmWears small

Specifications

Reference
GA-B001-1A
Collection
G-Shock
Status
In production
Case material
carbon / resin
Crystal
mineral
Water resistance
200 m
Bezel
fixed resin bezel
Strap / bracelet
resin band
Weight
51 g
Style
Digital, Sport

Movement

Caliber
Casio 5690
Type
quartz
Accuracy
+/-15 s/month (without mobile link)

More G-Shock references

Watches that wear the same size

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

Sources