Side by side
Duckworth Prestex Belmont 300 AutomaticvsSeiko Prospex Sea 1968 Heritage Diver's GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Belmont 300 Automatic42mm
Prospex Sea 1968 Heritage Diver's GMT42mm
Power Reserve
Belmont 300 Automatic38h
Prospex Sea 1968 Heritage Diver's GMT72h
Water Resistance
Belmont 300 Automatic300m
Prospex Sea 1968 Heritage Diver's GMT200m
MSRP
Belmont 300 Automatic$750
Prospex Sea 1968 Heritage Diver's GMT$1,500
Full specifications
Case
4 specsCategory
—
Diver
Thickness
13mm
12.9mm
Lug-to-Lug
50mm
48.6mm
Water Resistance
300m
200m
Crystal & Dial
3 specsAR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
—
Black
Lume
None
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
Miyota 9039
6R54
Power Reserve
38h
72h
Jewels
25
24
Pricing
1 specsMSRP
$750
$1,500
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