Side by side
Alexander James Watches A4 Prelude 37 GMTvsSeiko Prospex SPEEDTIMER Mechanical
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 GMT37.4mm
Prospex SPEEDTIMER Mechanical39.5mm
Power Reserve
A4 Prelude 37 GMT—
Prospex SPEEDTIMER Mechanical72h
Water Resistance
A4 Prelude 37 GMT200m
Prospex SPEEDTIMER Mechanical200m
MSRP
A4 Prelude 37 GMT—
Prospex SPEEDTIMER Mechanical$995
Full specifications
Case
4 specsCategory
—
Chronograph
Diameter
37.4mm
39.5mm
Thickness
12.1mm
12mm
Lug-to-Lug
44.7mm
44.5mm
Crystal & Dial
4 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
White
Black
Lume
BGW9
LumiBrite on hands and index(es)
Movement
3 specsCaliber
Seiko NH34
6R55
Power Reserve
—
72h
Jewels
25
24
Pricing
1 specsMSRP
—
$995
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