Side by side
Sheffield 1A 40mmvsSeiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
1A 40mm40mm
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch42.6mm
Power Reserve
1A 40mm40h
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch50h
Water Resistance
1A 40mm200m
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch300m
MSRP
1A 40mm$228
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch$2,900
Full specifications
Case
5 specsCategory
—
Diver
Diameter
40mm
42.6mm
Thickness
13mm
13.4mm
Lug-to-Lug
48mm
49.3mm
Water Resistance
200m
300m
Crystal & Dial
4 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
—
Black
Lume
None
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
Seiko NH35
8L35
Power Reserve
40h
50h
Jewels
25
26
Pricing
1 specsMSRP
$228
$2,900
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