Side by side

Grand Seiko SBGH347vsZelos Hammerhead V3 300m Bronze

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

The bottom line

The 37mm SBGH347 wears 7mm narrower than the 44mm Hammerhead V3 300m Bronze — that's a meaningful jump on most wrists.

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 SBGH347

The Grand Seiko SBGH347 is lauded for its refined 37mm Ever-Brilliant Steel case, impressive Zaratsu polishing, and classy ice-blue dial inspired by frozen waterfalls. Its Hi-Beat 9S85 movement is a significant draw, and the framed date window is preferred over a cyclops. Reviewers note the bracelet lacks micro-adjustment or a quick-change system, and some wished the 13.3mm thickness was slightly thinner on the compact case. Overall, reviewers praise the Grand Seiko SBGH347 for its elevated finish and value, with the Hi-Beat movement being a significant draw.

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.

Where to get them

Check prices & track

Grand Seiko SBGH347
Grand Seiko SBGH347
MSRP $7,300
Zelos Hammerhead V3 300m Bronze
Zelos Hammerhead V3 300m Bronze
MSRP $449
SBGH347
Grand SeikoSBGH347
MSRP $7,300
Hammerhead V3 300m Bronze
ZelosHammerhead V3 300m Bronze
MSRP $449

At a glance

13 of 29 specs differ
Diameter
SBGH34737mm
Hammerhead V3 300m Bronze44mm
Power Reserve
SBGH34755h
Hammerhead V3 300m Bronze40h
Water Resistance
SBGH347100m
Hammerhead V3 300m Bronze300m
MSRP
SBGH347$7,300
Hammerhead V3 300m Bronze$449

Full specifications

Case

7 specs
Category
Dress
Diver
Diameter
37mm
44mm
Thickness
13.3mm
13mm
Lug-to-Lug
44.6mm
44mm
Lug Width
19mm
22mm
Material
Stainless Steel
Titanium
Water Resistance
100m
300m

Crystal & Dial

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

Movement

2 specs
Caliber
9S85
Seiko NH35
Power Reserve
55h
40h

Pricing

1 specs
MSRP
$7,300
$449

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