Side by side
Formex Reef 42 mmvsSheffield Deep Gray 300
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
8 of 29 specs differDiameter
Reef 42 mm42mm
Deep Gray 30042mm
Power Reserve
Reef 42 mm56h
Deep Gray 30040h
Water Resistance
Reef 42 mm300m
Deep Gray 300300m
MSRP
Reef 42 mm$2,414
Deep Gray 300$258
Full specifications
Case
3 specsCategory
Diver
—
Thickness
11.4mm
13.8mm
Lug-to-Lug
47mm
52mm
Crystal & Dial
2 specsDial Color
Black
—
Lume
Super-LumiNova
None
Movement
2 specsCaliber
Sellita SW300-1
Seiko NH35
Power Reserve
56h
40h
Pricing
1 specsMSRP
$2,414
—
More watches worth a look
Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.
Follow this matchup
Get a note when Formex Reef 42 mm vs Sheffield Deep Gray 300 gets more votes, a community discussion, or a price drop. No account needed.
People also compared
Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.












