Side by side

Grand Seiko SBGE307vsZelos Hammerhead V3 300m Bronze

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

SBGE307
Grand SeikoSBGE307
MSRP $11,500
Hammerhead V3 300m Bronze
ZelosHammerhead V3 300m Bronze
MSRP $449

At a glance

13 of 29 specs differ
Diameter
SBGE30744.5mm
Hammerhead V3 300m Bronze44mm
Power Reserve
SBGE30772h
Hammerhead V3 300m Bronze40h
Water Resistance
SBGE307200m
Hammerhead V3 300m Bronze300m
MSRP
SBGE307$11,500
Hammerhead V3 300m Bronze$449

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
44.5mm
44mm
Thickness
14.9mm
13mm
Lug-to-Lug
50mm
44mm
Lug Width
23mm
22mm
Water Resistance
200m
300m

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
Yes
Inner
Dial Color
Black
Bronze - Frost

Movement

3 specs
Caliber
9R66
Seiko NH35
Type
Spring Drive
Automatic
Power Reserve
72h
40h

Pricing

1 specs
MSRP
$11,500
$449

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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.

Zelos Hammerhead V3 300m Bronze

Owners widely praise the Zelos Hammerhead V3 300m Bronze for its distinctive 70s-inspired design, slim 13.5mm case, and improved lume, offering a sophisticated timepiece at an accessible price point starting at $349. The unique dial is noted for evoking an otherworldly feeling, and the comfortable bracelet features on-the-fly micro-adjustment. Some enthusiasts express frustration with shipping delays and a desire to see the watch on a wrist before purchase. One owner flags that the clasp material could be more scratch-resistant, and resizing bracelet pins can be stubborn. On balance, owners rate the Zelos Hammerhead V3 300m Bronze highly for its unique design and build quality at its price point.

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