Side by side

Zelos Hammerhead (Tantalum LE)vsGrand Seiko SBGN027

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

Hammerhead (Tantalum LE)
ZelosHammerhead (Tantalum LE)
MSRP $1,499
SBGN027
Grand SeikoSBGN027
MSRP $3,700

At a glance

13 of 29 specs differ
Diameter
Hammerhead (Tantalum LE)44mm
SBGN02739mm
Power Reserve
Hammerhead (Tantalum LE)40h
SBGN02740h
Water Resistance
Hammerhead (Tantalum LE)300m
SBGN027200m
MSRP
Hammerhead (Tantalum LE)$1,499
SBGN027$3,700

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
44mm
39mm
Thickness
13mm
12.3mm
Lug-to-Lug
44mm
45.9mm
Lug Width
22mm
19mm
Material
Titanium
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

3 specs
Crystal
Domed Sapphire
Sapphire
AR Coating
Inner
Yes
Dial Color
Tantalum LE
Black

Movement

2 specs
Caliber
Seiko NH35
9F86
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$1,499
$3,700

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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.

Zelos Hammerhead (Tantalum LE)

The Zelos Hammerhead (Tantalum LE) features a forged carbon dial and bezel insert with infused lume. On balance, owners and reviewers rate the Zelos Hammerhead (Tantalum LE) highly for its unique material composition and substantial feel.

Grand Seiko SBGN027

Owners widely praise the Grand Seiko SBGN027 for its exceptional Zaratsu polishing, compact 39mm size, and versatile monochrome aesthetic, noting its thin profile and suitability as a grab-and-go watch. The 9F quartz movement delivers highly accurate timekeeping, with one owner reporting +/- 10 seconds per year. However, some find the lume limited, the bracelet lacks micro-adjustments, and the GMT hand can be easily mistaken for the minute hand. One owner reported a black index on the bezel disappearing after a couple of months. On balance, owners rate the Grand Seiko SBGN027 highly for its premium finishing and accurate HAQ GMT movement in a wearable size.

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