Side by side

MKII HellionvsSeiko 5 Sports SKX series

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

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

MKII Hellion

The MKII Hellion is widely praised for its immaculate fit and finish, with a mirror-polished case that bridges field and dress styles. Owners appreciate its vintage-inspired lug design and the satisfying heft that balances classic appeal. The large crown is a noted feature, adding a masculine touch to the refined design. One owner questions if the price aligns with the specifications. Overall, owners rate the MKII Hellion highly for its exceptional finishing and versatile, refined design at the price point.

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.

At a glance

12 of 29 specs differ
Diameter
Hellion39mm
5 Sports SKX series28mm
Power Reserve
Hellion
5 Sports SKX series40h
Water Resistance
Hellion100m
5 Sports SKX series100m
MSRP
Hellion$649
5 Sports SKX series$315

Full specifications

Case

5 specs
Category
Sport
Diameter
39mm
28mm
Thickness
13.55mm
11.2mm
Lug-to-Lug
48.5mm
33.1mm
Lug Width
20mm
14mm

Crystal & Dial

3 specs
Crystal
Sapphire
Hardlex
Dial Color
Black
Lume
SuperLuminova
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Seiko NH38
Seiko 2R06
Power Reserve
40h
Jewels
0
21

Pricing

1 specs
MSRP
$649
$315
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