Glycine Combat Sub SportvsSheffield 1A

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Glycine Combat Sub Sport at true scale

Combat Sub Sport

Sheffield 1A at true scale

1A

Diameter

39mm

40mm

Lug-to-Lug

n/a

46mm

Thickness

11.2mm

lowest

12.8mm

Water Resistance

300m

highest

200m

Power Reserve

38h

n/a

MSRP

$540

$238

lowest

Movement

Sellita SW200-1

Seiko NH35

Case

6 specs
Diameter
39mm
40mm
Thickness
11.2mm
12.8mm
Lug-to-Lug
n/a
46mm
Finish
n/a
n/a
Water Resistance
300m
200m
Caseback
n/a
n/a

Crystal & Dial

5 specs
Crystal Shape
n/a
n/a
AR Coating
n/a
n/a
Dial Color
Black
White/Blue
Indices
n/a
n/a
Lume
Luminous
Swiss blue lume

Movement

5 specs
Caliber
Sellita SW200-1
Seiko NH35
Beat Rate
28,800 vph
0 vph
Power Reserve
38h
n/a
Jewels
26
0
Complications
Date
None

Pricing

1 specs
MSRP
$540
$238
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Reviews

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

Glycine Combat Sub Sport

Owners widely praise the Glycine Combat Sub Sport for its thinness, with various sources citing measurements between 10.4mm and 10.8mm, and its comfortable wearability due to contoured lugs that make it feel smaller than its 39mm case size. Reviewers and owners consistently highlight its value, with some considering it the best dive watch under $400 and noting its refined finishing and smooth winding action. However, opinions are mixed on its design, with some finding it unique and others plain or questioning its homage status. Lume quality is a point of contention, with some finding it subpar and hard to read at night, while others describe it as marginally better than a Seiko SKX007. Some owners have also reported inconsistent power reserve or stem issues. Overall, owners and reviewers rate the Glycine Combat Sub Sport highly for its exceptional thinness and value proposition at the price point.

Sheffield 1A

Sheffield 1A owners praise its superb quality, sturdiness, and value, noting it feels more substantial than a Seiko 5. The blue dial is highlighted as a positive feature. One owner flagged 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.