Glycine Combat SubvsSpinnaker Spence 300

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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

Spinnaker Spence 300 at true scale

Spence 300

Diameter

42mm

40mm

Lug-to-Lug

n/a

48mm

Thickness

10.4mm

lowest

11.5mm

Water Resistance

200m

300m

highest

MSRP

$515

lowest

$650

Movement

Sellita SW200-1

Seiko NH35

Case

6 specs
Diameter
42mm
40mm
Thickness
10.45mm
11.5mm
Lug-to-Lug
n/a
48mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

1 specs
Dial Color
n/a
Aquamarine

Movement

1 specs
Caliber
Sellita SW200-1
Seiko NH35

Pricing

1 specs
MSRP
$515
$650
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Reviews

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

Glycine Combat Sub

The Glycine Men's Combat Sub 42mm Automatic Watch GL0530 is widely praised for its exceptional thinness at 10.4mm and its comfortable wearability on smaller wrists, often cited as a standout feature. Owners appreciate its unique, non-homage design and superior finishing for its price point, with some considering it the best automatic dive watch under $400. However, some find the "COMBAT" text on the dial unappealing, and the original strap or bracelet is frequently replaced. Reviewers and owners consistently note inconsistent power reserve figures, sometimes falling short of the advertised 42 hours, and sub-par lume readability at night. Overall, owners and community members rate the Glycine Men's Combat Sub 42mm Automatic Watch GL0530 highly for its remarkable thinness and comfortable wearability, making it a unique offering in its segment.

Spinnaker Spence 300

Owners widely praise the Spinnaker Spence 300 for its slim 10.9mm case and 40mm diameter, offering a comfortable and versatile wear. Reviewers and owners alike highlight its value, with some seeing it as a budget alternative to more expensive dive watches. The watch features a Seiko NH35 automatic movement and 300m water resistance. However, some community members find the dial printing and bracelet finishing to be less refined, and a few suggest other brands offer better value at similar price points. On balance, owners and reviewers rate the Spinnaker Spence 300 highly for its impressive case dimensions and overall value proposition.

From video reviewers

The watch's thin 10.9mm profile for a 300m diver is a key strength. No shared weakness was identified.