Side by side
Alexander James Watches A4 Prelude 37 GMT Light BluevsNaga Watches Opera
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
9 of 29 specs differDiameter
A4 Prelude 37 GMT Light Blue37.4mm
Opera39mm
Power Reserve
A4 Prelude 37 GMT Light Blue40h
Opera—
Water Resistance
A4 Prelude 37 GMT Light Blue200m
Opera100m
MSRP
A4 Prelude 37 GMT Light Blue$325
Opera$917
Full specifications
Case
5 specsDiameter
37.4mm
39mm
Thickness
12.1mm
10mm
Lug-to-Lug
46mm
—
Lug Width
20mm
—
Water Resistance
200m
100m
Crystal & Dial
1 specsDial Color
—
Lapislazuli
Movement
2 specsCaliber
Seiko NH34
Miyota 9039
Power Reserve
40h
—
Pricing
1 specsMSRP
$325
—
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