Side by side

Seiko 5 Sports SKX seriesvsTudor Black Bay GMT

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

5 Sports SKX series
Seiko5 Sports SKX series
MSRP $495
Black Bay GMT
TudorBlack Bay GMT
MSRP $5,275

At a glance

18 of 29 specs differ
Diameter
5 Sports SKX series42.5mm
Black Bay GMT41mm
Power Reserve
5 Sports SKX series41h
Black Bay GMT70h
Water Resistance
5 Sports SKX series100m
Black Bay GMT200m
MSRP
5 Sports SKX series$495
Black Bay GMT$5,275

Full specifications

Case

5 specs
Diameter
42.5mm
41mm
Thickness
13.6mm
14.6mm
Finish
Brushed and polished
Polished + Satin
Water Resistance
100m
200m
Caseback
Solid
Solid screw-down

Crystal & Dial

5 specs
Crystal
Hardlex
Sapphire
Crystal Shape
Flat
AR Coating
Inner
Indices
Applied
Lume
LumiBrite on hands and index(es)
None

Movement

7 specs
Caliber
4R34
MT5652
Beat Rate
28,800 vph
0 vph
Power Reserve
41h
70h
Jewels
24
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
GMT

Pricing

1 specs
MSRP
$495
$5,275

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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.

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.

Tudor Black Bay GMT

The Tudor Black Bay GMT is widely praised for its in-house movement offering local jumping GMT functionality, its impressive case finishing, and its vintage-inspired, drop-dead good looks. Reviewers highlight its strong value and consider it a quintessential sport watch for travelers. Some enthusiasts find its 15mm thickness divisive, though beveled edges visually reduce its perceived size. Overall, reviewers rate the Tudor Black Bay GMT highly for its excellent design and travel functionality at its price point.

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