Side by side
Duckworth Prestex Big Date AutomaticvsSeiko 5 Sports Field series
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
Big Date Automatic39.5mm
5 Sports Field series39.4mm
Power Reserve
Big Date Automatic48h
5 Sports Field series41h
Water Resistance
Big Date Automatic30m
5 Sports Field series100m
MSRP
Big Date Automatic$975
5 Sports Field series$450
Full specifications
Case
5 specsCategory
—
GMT
Diameter
39.5mm
39.4mm
Thickness
14.6mm
13.6mm
Lug-to-Lug
46mm
47.9mm
Water Resistance
30m
100m
Crystal & Dial
4 specsCrystal
Mineral
Hardlex
Crystal Shape
Flat
Curved
Dial Color
—
Black
Lume
None
LumiBrite on hands and index(es)
Movement
3 specsCaliber
—
4R34
Power Reserve
48h
41h
Jewels
25
24
Pricing
1 specsMSRP
$975
$450
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