Side by side

Zelos Hammerhead (Tantalum LE)vsSeiko 5 Sports SKX series

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
5 Sports SKX series
Seiko5 Sports SKX series
MSRP $315

At a glance

13 of 29 specs differ
Diameter
Hammerhead (Tantalum LE)44mm
5 Sports SKX series28mm
Power Reserve
Hammerhead (Tantalum LE)40h
5 Sports SKX series40h
Water Resistance
Hammerhead (Tantalum LE)300m
5 Sports SKX series100m
MSRP
Hammerhead (Tantalum LE)$1,499
5 Sports SKX series$315

Full specifications

Case

7 specs
Category
Diver
Sport
Diameter
44mm
28mm
Thickness
13mm
11.2mm
Lug-to-Lug
44mm
33.1mm
Lug Width
22mm
14mm
Material
Titanium
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

3 specs
Crystal
Domed Sapphire
Hardlex
Dial Color
Tantalum LE
Black
Lume
None
LumiBrite on hands and index(es)

Movement

2 specs
Caliber
Seiko NH35
2R06
Jewels
25
21

Pricing

1 specs
MSRP
$1,499
$315

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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 5 Sports SKX series

Owners widely praise the Seiko 5 Sports SKX series for its iconic dive watch design, robust build, and excellent value, with many appreciating its timeless styling and tool-like character. The movement, while basic, is noted as offering hacking and hand-winding capabilities, and accuracy varies, with many owners reporting +/-5 to 10 seconds per day despite the movement's potential for +/-40 seconds. Some owners find the original SKX models heavier and bulkier than newer iterations, while others critique the lack of a screw-down crown and ISO rating on the newer Seiko 5 Sports SKX series, deeming it less of a serious tool watch. Overall, owners rate the Seiko 5 Sports SKX series highly for its enduring design and value proposition as a robust, everyday watch.

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