Side by side

Seiko 5 Sports SKX seriesvsTuseno Shellback

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

Add a watch

Some links are affiliate links — lug2lug may earn a commission at no extra cost to you. Disclosures

What people say

Owners + reviewers, side by side

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

Seiko 5 Sports SKX series

The Seiko 5 Sports SKX series is widely praised as an excellent gateway watch, offering great value with a solid build and powerful lume. Owners widely report that the NH36 movement's accuracy is a "luck of the draw," with official specs allowing up to +/-40 seconds per day, though many experience +/-5 to 10 seconds. Some owners note the lack of a screw-down crown and 100m water resistance, while others highlight its ISO 6425 compliance, 200m water resistance, and screw-down crown as superior tool watch features. Some owners find the original SKX models heavier and bulkier than newer lines, while others praise its iconic, tough, and rugged dive watch design and proven durability. On balance, owners and reviewers rate the Seiko 5 Sports SKX series highly for its iconic, durable dive watch design and strong value proposition.

Tuseno Shellback

The build quality is cited as a significant strength. Availability is a weakness, with stock running low.

At a glance

13 of 29 specs differ
Diameter
5 Sports SKX series42.5mm
Shellback40mm
Power Reserve
5 Sports SKX series41h
Shellback
Water Resistance
5 Sports SKX series100m
Shellback200m
MSRP
5 Sports SKX series$495
Shellback$840

Full specifications

Case

6 specs
Category
GMT
Diameter
42.5mm
40mm
Thickness
13.6mm
11.9mm
Lug-to-Lug
46mm
47mm
Lug Width
22mm
20mm
Water Resistance
100m
200m

Crystal & Dial

3 specs
Crystal
Hardlex
Sapphire
Dial Color
Yellow
Lume
LumiBrite on hands and index(es)
Super-LumiNova

Movement

3 specs
Caliber
Seiko 4R34
Sellita SW200-1
Power Reserve
41h
Jewels
24
0

Pricing

1 specs
MSRP
$495
$840
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

DiscussionNot started
Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.