Glycine Combat SubvsMomentum M20 GMT

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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 at true scale

Combat Sub

Momentum M20 GMT at true scale

M20 GMT

Diameter

40mm

42mm

Lug-to-Lug

n/a

50mm

Thickness

11.2mm

lowest

13mm

Water Resistance

200m

200m

MSRP

$225

lowest

$315

Movement

515

Ronda 515

Case

7 specs
Category
Diver
GMT
Diameter
40mm
42mm
Thickness
11.15mm
13mm
Lug-to-Lug
n/a
50mm
Lug Width
20mm
22mm
Finish
n/a
n/a
Caseback
n/a
n/a

Crystal & Dial

5 specs
Crystal Shape
n/a
n/a
AR Coating
n/a
n/a
Dial Color
Green
n/a
Indices
n/a
n/a
Lume
Luminous
None

Movement

5 specs
Caliber
515
Ronda 515
Beat Rate
n/a
0 vph
Power Reserve
n/a
0h
Jewels
1
0
Complications
Date
None

Pricing

1 specs
MSRP
$225
$315
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Reviews

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

Glycine Combat Sub

Owners widely praise the Glycine Combat Sub for its slim profile, with multiple sources noting thicknesses around 10.4mm to 10.8mm, and its well-proportioned, non-homage design that wears comfortably. Reviewers and owners consistently highlight its exceptional value and quality for the price, with one owner reporting accuracy rivaling COSC standards and exceptional durability. The bezel action is described as buttery smooth, and the dial features tasteful indices and crisp fonts, with one specific gold and blue variant lauded for its refined aesthetic. However, multiple sources flag the lume as sub-par and difficult to read at night, and some owners note inconsistent power reserve. Overall, owners and reviewers rate the Glycine Combat Sub highly for its exceptional value and slim, comfortable wearability.

From video reviewers

The slim case profile and comfortable wearability are praised. The bezel action received criticism for having slight play and a less-than-satisfying click.

Momentum M20 GMT

Owners widely praise the Momentum M20 GMT for its robust build quality, sapphire crystal, and satisfying 120-click bezel action, with many finding its 42mm case wears comfortably like a 40mm due to curved lugs. The bracelet is frequently highlighted as exceptionally comfortable and superior to aftermarket options. Some owners note the second hand occasionally misses markers, and one found the lume inadequate. On balance, owners rate the Momentum M20 GMT highly for its tool watch utility and comfortable, robust bracelet at its price point.