Side by side
Sheffield GMTvsSeiko Monster
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
GMT40mm
Monster42.4mm
Power Reserve
GMT—
Monster41h
Water Resistance
GMT200m
Monster200m
MSRP
GMT—
Monster$550
Full specifications
Case
4 specsCategory
GMT
Diver
Diameter
40mm
42.4mm
Thickness
13mm
13.4mm
Lug-to-Lug
48mm
49.4mm
Crystal & Dial
3 specsCrystal
Sapphire
Hardlex
Dial Color
Blue
Black
Lume
None
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
Seiko NH34
4R36
Power Reserve
—
41h
Jewels
25
24
Pricing
1 specsMSRP
—
$550
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