Side by side

Serket Watch Co Reef MarianavsSpinnaker Bradner GMT

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

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Reef Mariana
Serket Watch CoReef Mariana
MSRP $449
Bradner GMT
SpinnakerBradner GMT
MSRP $299
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Buy used on eBay ↗
Buy from Spinnaker ↗
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At a glance

12 of 29 specs differ
Diameter
Reef Mariana40mm
Bradner GMT42mm
Power Reserve
Reef Mariana—
Bradner GMT40h
Water Resistance
Reef Mariana200m
Bradner GMT180m
MSRP
Reef Mariana$449
Bradner GMT$299

Full specifications

Case

7 specs
Category
—
GMT
Diameter
40mm
42mm
Thickness
13.2mm
15mm
Lug-to-Lug
47.5mm
50mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
180m

Crystal & Dial

2 specs
Dial Color
Orange
Brown
Lume
BGW9
None

Movement

2 specs
Caliber
Seiko NH35
Seiko NH34A
Power Reserve
—
40h

Pricing

1 specs
MSRP
$449
$299
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