Side by side
Sheffield GMTvsSeiko Prospex Sea Save the Ocean Special Edition
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
GMT40mm
Prospex Sea Save the Ocean Special Edition43.8mm
Power Reserve
GMT—
Prospex Sea Save the Ocean Special Edition41h
Water Resistance
GMT200m
Prospex Sea Save the Ocean Special Edition200m
MSRP
GMT—
Prospex Sea Save the Ocean Special Edition$650
Full specifications
Case
5 specsCategory
GMT
Diver
Diameter
40mm
43.8mm
Thickness
13mm
12.8mm
Lug-to-Lug
48mm
48.7mm
Lug Width
20mm
22mm
Crystal & Dial
3 specsAR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Blue
Black
Lume
None
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
Seiko NH34
4R35
Power Reserve
—
41h
Jewels
25
23
Pricing
1 specsMSRP
—
$650
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