Side by side

Glycine Combat SubvsSeiko Prospex Sea

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Combat Sub
GlycineCombat Sub
MSRP $895
Prospex Sea
SeikoProspex Sea
MSRP $795

At a glance

17 of 29 specs differ
Diameter
Combat Sub40mm
Prospex Sea34mm
Power Reserve
Combat Sub
Prospex Sea40h
Water Resistance
Combat Sub200m
Prospex Sea200m
MSRP
Combat Sub$895
Prospex Sea$795

Full specifications

Case

6 specs
Diameter
40mm
34mm
Thickness
11.15mm
8.7mm
Lug-to-Lug
40.8mm
Lug Width
20mm
16mm
Finish
Brushed and polished
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Anti-reflective coating on inner surface
Dial Color
Green
Black
Indices
Applied
Lume
Luminous
LumiBrite on hands and index(es)

Movement

5 specs
Caliber
515
6N01
Beat Rate
28,800 vph
Power Reserve
40h
Jewels
1
25
Complications
Date
None

Pricing

1 specs
MSRP
$895
$795

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What people say

Owners + reviewers, side by side

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

Glycine Combat Sub

The Glycine Combat Sub is widely praised for its exceptional thinness, with multiple sources highlighting its sub-11mm case height and comfortable wearability, even on smaller wrists. Owners appreciate its unique, non-homage aesthetic, refined finishing, and excellent value for money. Specific positive notes include a buttery smooth bezel action, tasteful indices, crisp font, and a matching date wheel. Accuracy is reported to rival COSC standards by one owner, and durability is noted as exceptional. However, some owners report inconsistent power reserve and sub-par lume that is difficult to read in low light. On balance, owners and community members rate the Glycine Combat Sub highly for its slim profile and unique design at an accessible price point.

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.

Seiko Prospex Sea

Owners widely praise the Seiko Prospex Sea for its excellent value, robust build, and superb lume, with many appreciating its comfortable wearability due to its case shape and lug-to-lug distance. Reviewers consistently highlight its impressive finishing and classic dive watch design, often noting the bright LumiBrite lume. Some owners find the watch to be large, thick, and heavy, while others consider it the perfect size, indicating a split opinion on wearability for smaller wrists. The power reserve from some movements is noted as less than newer variants, and the clasp quality receives mixed feedback. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its exceptional finishing and value proposition in the dive watch market.

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