Side by side

Mark Time Watches M 4vsGrand Seiko SBGE307

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
SBGE307
Grand SeikoSBGE307
MSRP $11,500
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
SBGE30744.5mm
Power Reserve
M 4—
SBGE30772h
Water Resistance
M 4300m
SBGE307200m
MSRP
M 4—
SBGE307$11,500

Full specifications

Case

7 specs
Category
—
GMT
Diameter
39mm
44.5mm
Thickness
12.1mm
14.9mm
Lug-to-Lug
46mm
50mm
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
9R66
Type
Automatic
Spring Drive
Power Reserve
—
72h

Pricing

1 specs
MSRP
—
$11,500
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