Side by side
Sheffield 1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)vsSeiko Prospex Sea 1965 Heritage Diver's Watch
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)38mm
Prospex Sea 1965 Heritage Diver's Watch40mm
Power Reserve
1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)—
Prospex Sea 1965 Heritage Diver's Watch72h
Water Resistance
1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)200m
Prospex Sea 1965 Heritage Diver's Watch300m
MSRP
1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)$223
Prospex Sea 1965 Heritage Diver's Watch$1,300
Full specifications
Case
4 specsDiameter
38mm
40mm
Thickness
12.8mm
13mm
Lug-to-Lug
46mm
46.4mm
Water Resistance
200m
300m
Crystal & Dial
4 specsCrystal Shape
Flat
Curved
AR 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
6R55
Power Reserve
—
72h
Jewels
25
24
Pricing
1 specsMSRP
$223
$1,300
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