Side by side

Seiko 5 Sports Field seriesvsUndone Basecamp Gmt

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

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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 Field series

The Seiko 5 Sports Field series is praised for its value, offering an accessible explorer-style watch with a GMT complication and excellent legibility thanks to LumiBrite on the dial and bezel. The watches feature a 41mm stainless steel case, 100m water resistance, and are powered by either the 4R36 or 4R34 movement, both with a 41-hour power reserve. One reviewer notes the inclusion of a compass bezel with a lumed pearl and fully lumed Arabic numerals on the dial for the non-GMT models. Overall, reviewers consider the Seiko 5 Sports Field GMT models good value under 500 euros.

Undone Basecamp Gmt

The Undone Basecamp Gmt is widely praised for its vintage military aesthetic, comfortable 40mm case, and excellent value under $300, with reviewers noting its smooth, precise bidirectional bezel. Owners and reviewers consistently flag the Lexan polycarbonate crystal as a concern for long-term scratch resistance. The watch uses a Seiko NH34 automatic movement, and while its water resistance is listed as 50 meters, it is reportedly tested to 100 meters. One forum user points out that the orange arrow hand indicates the 12-hour time, not the 24-hour GMT function. Overall, owners and reviewers rate the Undone Basecamp Gmt highly for its versatile vintage design and strong value proposition.

At a glance

13 of 29 specs differ
Diameter
5 Sports Field series39.4mm
Basecamp Gmt40mm
Power Reserve
5 Sports Field series41h
Basecamp Gmt
Water Resistance
5 Sports Field series100m
Basecamp Gmt100m
MSRP
5 Sports Field series$315
Basecamp Gmt$480

Full specifications

Case

5 specs
Category
Sport
Diameter
39.4mm
40mm
Thickness
13.2mm
15mm
Lug-to-Lug
48.1mm
0mm
Lug Width
20mm
0mm

Crystal & Dial

4 specs
Crystal
Hardlex
Crystal Shape
Curved
Dial Color
Lume
LumiBrite on hands and index(es)
None

Movement

3 specs
Caliber
Seiko 4R36
Seiko NH34
Power Reserve
41h
0h
Jewels
24
0

Pricing

1 specs
MSRP
$315
$480
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