Side by side

Grand Seiko SBGE307vsSpinnaker Dumas GMT

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

SBGE307
Grand SeikoSBGE307
MSRP $11,500
Dumas GMT
SpinnakerDumas GMT
MSRP $399

At a glance

12 of 29 specs differ
Diameter
SBGE30744.5mm
Dumas GMT44mm
Power Reserve
SBGE30772h
Dumas GMT40h
Water Resistance
SBGE307200m
Dumas GMT300m
MSRP
SBGE307$11,500
Dumas GMT$399

Full specifications

Case

6 specs
Diameter
44.5mm
44mm
Thickness
14.9mm
15mm
Lug-to-Lug
50mm
48mm
Lug Width
23mm
22mm
Material
Titanium
316L Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Dial Color
Black
Blue

Movement

3 specs
Caliber
9R66
Seiko NH34A
Type
Spring Drive
Automatic
Power Reserve
72h
40h

Pricing

1 specs
MSRP
$11,500
$399

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Grand Seiko SBGE307

The Grand Seiko SBGE307 is praised for its unique "lion's mane" textured ivory dial and angular, modern titanium case featuring Zaratsu polishing. Reviewers highlight the aggressive, claw-shaped lugs and the contrasting hairline finishing, as well as the brownish-red GMT hand as a notable accent. The watch is powered by the 9R66 Spring Drive movement, offering a 72-hour power reserve and accuracy rated at +/- 15 seconds per month by one source, and +/- 1 second per day by another. It is priced at $10,700 USD and offers 200m water resistance. On balance, reviewers find the Grand Seiko SBGE307 to be a striking timepiece distinguished by its textured dial and sharp case finishing.

Spinnaker Dumas GMT

Owners praise the Spinnaker Dumas GMT's satisfying lume, including on the crown, and good finishing, with one owner finding it wears well on a 17cm wrist. The watch features a Seiko NH34A GMT movement and a blue gradient dial. Reviewers note its 44mm diameter and 209g weight on the bracelet make it unsuitable for smaller wrists.

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