Side by side
Alexander James Watches A4 Prelude 37 GMTvsErgon Watches Adventum
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
7 of 29 specs differDiameter
A4 Prelude 37 GMT37.4mm
Adventum40mm
Power Reserve
A4 Prelude 37 GMT—
Adventum—
Water Resistance
A4 Prelude 37 GMT200m
Adventum100m
MSRP
A4 Prelude 37 GMT—
Adventum—
Full specifications
Case
5 specsDiameter
37.4mm
40mm
Thickness
12.1mm
10.5mm
Lug-to-Lug
44.7mm
50mm
Lug Width
20mm
—
Water Resistance
200m
100m
Crystal & Dial
1 specsLume
BGW9
None
Movement
1 specsCaliber
Seiko NH34
Miyota 9015
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