Side by side

Zelos Hammerhead (Tantalum LE)vsSeiko Astron GPS Solar 2024 Limited Edition

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
Astron GPS Solar 2024 Limited Edition
SeikoAstron GPS Solar 2024 Limited Edition
MSRP $2,300

At a glance

14 of 29 specs differ
Diameter
Hammerhead (Tantalum LE)44mm
Astron GPS Solar 2024 Limited Edition41.2mm
Power Reserve
Hammerhead (Tantalum LE)40h
Astron GPS Solar 2024 Limited Edition40h
Water Resistance
Hammerhead (Tantalum LE)300m
Astron GPS Solar 2024 Limited Edition100m
MSRP
Hammerhead (Tantalum LE)$1,499
Astron GPS Solar 2024 Limited Edition$2,300

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
44mm
41.2mm
Thickness
13mm
12mm
Lug-to-Lug
44mm
48.5mm
Lug Width
22mm
14mm
Water Resistance
300m
100m

Crystal & Dial

4 specs
Crystal
Domed Sapphire
Sapphire
AR Coating
Inner
Super-clear coating
Dial Color
Tantalum LE
Black
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Seiko NH35
3X62
Type
Automatic
Quartz
Jewels
25
10

Pricing

1 specs
MSRP
$1,499
$2,300

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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.

Seiko Astron GPS Solar 2024 Limited Edition

The Seiko Astron GPS Solar 2024 Limited Edition is widely praised for its light and thin wearability, with owners highlighting its comfortable 39mm size and titanium construction. Reviewers and owners alike commend its excellent lume application, clear and legible dial, and subtle gold accents. The watch offers automatic GPS time adjustment for global time and location updates, a perpetual calendar, and a six-month power reserve, eliminating battery changes. Some owners, however, find its dial too shiny for maximum versatility and note that its size wears larger than its dimensions suggest, making it less of a daily driver for some. A minor point of contention for some is the chapter ring alignment, which was noted as slightly imperfect. Overall, owners and reviewers rate the Seiko Astron GPS Solar 2024 Limited Edition highly for its blend of high-tech functionality, comfortable wearability, and attractive design.

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