Side by side
Sheffield 1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)vsSeiko Prospex Sea 1968 Heritage Diver's GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)38mm
Prospex Sea 1968 Heritage Diver's GMT42mm
Power Reserve
1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)—
Prospex Sea 1968 Heritage Diver's GMT72h
Water Resistance
1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)200m
Prospex Sea 1968 Heritage Diver's GMT200m
MSRP
1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)$223
Prospex Sea 1968 Heritage Diver's GMT$1,500
Full specifications
Case
3 specsDiameter
38mm
42mm
Thickness
12.8mm
12.9mm
Lug-to-Lug
46mm
48.6mm
Crystal & Dial
3 specsAR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Blue
Black
Lume
None
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
Seiko NH35
6R54
Power Reserve
—
72h
Jewels
25
24
Pricing
1 specsMSRP
$223
$1,500
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