Side by side

Hamilton Khaki Aviation X-Wind Day Date AutovsSeiko 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.

Hamilton Khaki Aviation X-Wind Day Date Auto

Owners widely praise the Hamilton Khaki Aviation X-Wind Day Date Auto for its value, technical aesthetic, and versatile wearability with straps. Reviewers and owners alike highlight its excellent legibility, bold Arabic numerals, and the appeal of its pilot watch design, with many appreciating the 80-hour power reserve. Some owners find the crosswind calculation functions unnecessary, and there are mixed views on the dial's font usage and color matching. Lume is frequently noted as weak, and some find the size large or the left-handed crown and pusher setup uncomfortable. Accuracy figures range from gaining 6 seconds in a few days to approximately -6 seconds per day. Overall, owners rate the Hamilton Khaki Aviation X-Wind Day Date Auto highly for its impressive value and functional pilot watch design.

From video reviewers

The H-21 movement's 60-hour power reserve is a notable strength. The large 44mm case size was mentioned as a potential drawback.

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.

At a glance

11 of 29 specs differ
Diameter
Khaki Aviation X-Wind Day Date Auto45mm
5 Sports SKX series42.5mm
Power Reserve
Khaki Aviation X-Wind Day Date Auto80h
5 Sports SKX series41h
Water Resistance
Khaki Aviation X-Wind Day Date Auto100m
5 Sports SKX series100m
MSRP
Khaki Aviation X-Wind Day Date Auto$1,375
5 Sports SKX series$495

Full specifications

Case

4 specs
Category
Pilot
GMT
Diameter
45mm
42.5mm
Thickness
12.8mm
13.6mm
Lug-to-Lug
54mm
46mm

Crystal & Dial

3 specs
Crystal
Sapphire
Hardlex
Dial Color
Green
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
H-30
4R34
Power Reserve
80h
41h
Jewels
0
24

Pricing

1 specs
MSRP
$1,375
$495
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