Side by side
Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited EditionvsWilliam Wood Valiant No-Date
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition42.6mm
Valiant No-Date41mm
Power Reserve
Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition72h
Valiant No-Date—
Water Resistance
Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition300m
Valiant No-Date100m
MSRP
Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition$3,900
Valiant No-Date$1,100
Full specifications
Case
5 specsDiameter
42.6mm
41mm
Thickness
14.1mm
15mm
Lug-to-Lug
49.3mm
49mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m
Crystal & Dial
5 specsCrystal
Sapphire
Domed Sapphire
Crystal Shape
Curved
—
AR Coating
Anti-reflective coating on inner surface
—
Dial Color
—
Black
Lume
LumiBrite on hands, index(es) and bezel
None
Movement
3 specsCaliber
Seiko 8L45
Seiko NH35
Power Reserve
72h
0h
Jewels
35
0
Pricing
1 specsMSRP
$3,900
$1,100
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