Glycine Combat Sub SportvsSpinnaker 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 Sport at true scale

Combat Sub Sport

Spinnaker Spence 300 at true scale

Spence 300

Diameter

39mm

40mm

Lug-to-Lug

n/a

48mm

Thickness

11.2mm

lowest

11.5mm

Water Resistance

300m

300m

Power Reserve

38h

n/a

MSRP

$540

lowest

$650

Movement

Sellita SW200-1

Seiko NH35

Case

6 specs
Diameter
39mm
40mm
Thickness
11.2mm
11.5mm
Lug-to-Lug
n/a
48mm
Material
Stainless Steel
316L Stainless Steel
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
Black
Aquamarine
Indices
n/a
n/a
Lume
Luminous
None

Movement

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

Pricing

1 specs
MSRP
$540
$650
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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.

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.