Side by side
Alexander James Watches A4 Prelude 37 GMT Light BluevsSeiko Prospex Sea
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
A4 Prelude 37 GMT Light Blue37.4mm
Prospex Sea41.3mm
Power Reserve
A4 Prelude 37 GMT Light Blue40h
Prospex Sea72h
Water Resistance
A4 Prelude 37 GMT Light Blue200m
Prospex Sea300m
MSRP
A4 Prelude 37 GMT Light Blue$325
Prospex Sea$1,100
Full specifications
Case
5 specsCategory
—
Diver
Diameter
37.4mm
41.3mm
Thickness
12.1mm
12.5mm
Lug-to-Lug
46mm
48.2mm
Water Resistance
200m
300m
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
Seiko NH34
6R55
Power Reserve
40h
72h
Jewels
25
24
Pricing
1 specsMSRP
$325
$1,100
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