Side by side

Sheffield 1AvsUndone Basecamp Gmt

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.

Sheffield 1A

Owners widely praise the Sheffield 1A for its superb quality, sturdiness, and value, with many finding its blue dial appealing and its construction more substantial than comparable models. One owner noted expensive shipping fees as a drawback, and another suggested the bezel action could be crisper. Overall, owners consider the Sheffield 1A a no-brainer for its affordability and quality.

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

11 of 29 specs differ
Diameter
1A40mm
Basecamp Gmt40mm
Power Reserve
1A
Basecamp Gmt
Water Resistance
1A200m
Basecamp Gmt100m
MSRP
1A$223
Basecamp Gmt$480

Full specifications

Case

5 specs
Category
Diver
Thickness
12.8mm
15mm
Lug-to-Lug
46mm
0mm
Lug Width
20mm
0mm
Water Resistance
200m
100m

Crystal & Dial

3 specs
Crystal
Sapphire
Dial Color
White/Blue
Lume
Swiss blue lume
None

Movement

2 specs
Caliber
Seiko NH35
Seiko NH34
Power Reserve
0h

Pricing

1 specs
MSRP
$223
$480
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