Side by side

Mark Time Watches M 4vsGrand Seiko SLGA015

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

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M 4
Mark Time WatchesM 4
SLGA015
Grand SeikoSLGA015
MSRP $12,600
Buy from Mark Time Watches ↗
Buy used on eBay ↗
Buy from Grand Seiko ↗
Buy used on eBay ↗

At a glance

13 of 29 specs differ
Diameter
M 439mm
SLGA01543.8mm
Power Reserve
M 4—
SLGA015120h
Water Resistance
M 4300m
SLGA015200m
MSRP
M 4—
SLGA015$12,600

Full specifications

Case

7 specs
Category
—
Diver
Diameter
39mm
43.8mm
Thickness
12.1mm
13.8mm
Lug-to-Lug
46mm
51.5mm
Lug Width
20mm
23mm
Material
Stainless Steel
Titanium
Water Resistance
300m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
—
Black

Movement

3 specs
Caliber
Miyota 9039
9RA5
Type
Automatic
Spring Drive
Power Reserve
—
120h

Pricing

1 specs
MSRP
—
$12,600
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