Side by side
Seiko Prospex SeavsSheffield 1A
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Prospex Sea42mm
1A40mm
Power Reserve
Prospex Sea72h
1A—
Water Resistance
Prospex Sea300m
1A200m
MSRP
Prospex Sea—
1A$223
Full specifications
Case
4 specsDiameter
42mm
40mm
Thickness
13.3mm
12.8mm
Lug-to-Lug
48.6mm
46mm
Water Resistance
300m
200m
Crystal & Dial
3 specsAR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
White/Blue
Lume
LumiBrite on hands, index(es) and bezel
Swiss blue lume
Movement
3 specsCaliber
6R54
Seiko NH35A
Power Reserve
72h
—
Jewels
24
25
Pricing
1 specsMSRP
—
$223
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