Side by side
Zelos Hammerhead (Tantalum LE)vsGrand Seiko STGK003
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
Hammerhead (Tantalum LE)44mm
STGK00328.7mm
Power Reserve
Hammerhead (Tantalum LE)40h
STGK00350h
Water Resistance
Hammerhead (Tantalum LE)300m
STGK003100m
MSRP
Hammerhead (Tantalum LE)$1,499
STGK003$31,200
Full specifications
Case
7 specsCategory
Diver
Dress
Diameter
44mm
28.7mm
Thickness
13mm
10.9mm
Lug-to-Lug
44mm
35.1mm
Lug Width
22mm
14mm
Material
Titanium
Gold
Water Resistance
300m
100m
Crystal & Dial
3 specsCrystal
Domed Sapphire
Sapphire
AR Coating
Inner
Yes
Dial Color
Tantalum LE
Black
Movement
2 specsCaliber
Seiko NH35
9S27
Power Reserve
40h
50h
Pricing
1 specsMSRP
$1,499
$31,200
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