Side by side
Serket Watch Co Reef MarianavsGruppo Gamma Field III GMT Date
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Reef Mariana40mm
Field III GMT Date40mm
Power Reserve
Reef Mariana—
Field III GMT Date41h
Water Resistance
Reef Mariana200m
Field III GMT Date200m
MSRP
Reef Mariana$449
Field III GMT Date$459
Full specifications
Case
4 specsCategory
—
GMT
Thickness
13.2mm
14mm
Lug-to-Lug
47.5mm
48.5mm
Lug Width
20mm
22mm
Crystal & Dial
3 specsAR Coating
Inner
Yes
Dial Color
Orange
Black
Lume
BGW9
Super-LumiNova
Movement
3 specsCaliber
Seiko NH35
Seiko Instruments NH38A
Power Reserve
—
41h
Complications
None
GMT, Date
Pricing
1 specsMSRP
$449
$459
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