Side by side
Serket Watch Co Reef MarianavsSeiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Reef Mariana40mm
Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition42.7mm
Power Reserve
Reef Mariana—
Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition70h
Water Resistance
Reef Mariana200m
Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition200m
MSRP
Reef Mariana$449
Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition$1,350
Full specifications
Case
3 specsCategory
—
Diver
Diameter
40mm
42.7mm
Lug-to-Lug
47.5mm
46.4mm
Crystal & Dial
4 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Orange
Black
Lume
BGW9
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
Seiko NH35
6R35
Power Reserve
—
70h
Jewels
25
24
Pricing
1 specsMSRP
$449
$1,350
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