Side by side

Formex Reef GMTvsSheffield Deep Gray 300

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

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Reef GMT
FormexReef GMT
MSRP $2,235
Deep Gray 300
SheffieldDeep Gray 300
MSRP $258
Buy from Formex ↗
Buy used on eBay ↗
Buy from Sheffield ↗
Buy used on eBay ↗

At a glance

8 of 29 specs differ
Diameter
Reef GMT42mm
Deep Gray 30042mm
Power Reserve
Reef GMT56h
Deep Gray 30040h
Water Resistance
Reef GMT300m
Deep Gray 300300m
MSRP
Reef GMT$2,235
Deep Gray 300$258

Full specifications

Case

3 specs
Category
GMT
—
Thickness
11.4mm
13.8mm
Lug-to-Lug
47mm
52mm

Crystal & Dial

2 specs
Dial Color
Black
—
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Sellita SW330-2
Seiko NH35
Power Reserve
56h
40h

Pricing

1 specs
MSRP
$2,235
—
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