Side by side

Formex Reef 39.5 mmvsSheffield Deep Gray 300

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

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Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230
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

9 of 29 specs differ
Diameter
Reef 39.5 mm39.5mm
Deep Gray 30042mm
Power Reserve
Reef 39.5 mm56h
Deep Gray 30040h
Water Resistance
Reef 39.5 mm300m
Deep Gray 300300m
MSRP
Reef 39.5 mm$2,230
Deep Gray 300$258

Full specifications

Case

4 specs
Category
Diver
—
Diameter
39.5mm
42mm
Thickness
11mm
13.8mm
Lug-to-Lug
45.5mm
52mm

Crystal & Dial

2 specs
Dial Color
Bahama Blue
—
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Sellita SW300-1
Seiko NH35
Power Reserve
56h
40h

Pricing

1 specs
MSRP
$2,230
—
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