Side by side

Mark Time Watches M 4vsSeiko Prospex Sea Save the Ocean Special Edition

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

At a glance

13 of 29 specs differ
Diameter
M 439mm
Prospex Sea Save the Ocean Special Edition43.8mm
Power Reserve
M 4
Prospex Sea Save the Ocean Special Edition41h
Water Resistance
M 4300m
Prospex Sea Save the Ocean Special Edition200m
MSRP
M 4
Prospex Sea Save the Ocean Special Edition$650

Full specifications

Case

6 specs
Category
Diver
Diameter
39mm
43.8mm
Thickness
12.1mm
12.8mm
Lug-to-Lug
46mm
48.7mm
Lug Width
20mm
22mm
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Miyota 9039
4R35
Power Reserve
41h
Jewels
25
23

Pricing

1 specs
MSRP
$650
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