Side by side

Glycine Combat SubvsSeiko Monster

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

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

Owners widely praise the Glycine Combat Sub for its exceptional thinness, with many noting its 10.4mm to 10.8mm profile for a diver, perfect proportions, and solid build quality that offers significant value, especially at discounted prices. Its unique aesthetic is appreciated for avoiding homage looks, and the lug design contributes to a smaller perceived wear size despite its 42mm case. Some owners report an inconsistent power reserve and sub-par lume that can be difficult to read at night, while one owner noted a slightly off-color lume pip on the chapter ring. Overall, owners rate the Glycine Combat Sub highly for its refined feel, slim profile, and value proposition.

Seiko Monster

Owners widely praise the Seiko Prospex Sea for its excellent value, robust build, and superb lume, with many noting its comfortable wearability. Reviewers consistently highlight its impressive finishing and classic dive watch design, often comparing it favorably to older models. Some owners find the size substantial, with one noting it as big, thick, and heavy on a 6.5-inch wrist, while others find it perfect. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its exceptional value and robust, classic dive watch design.

At a glance

18 of 29 specs differ
Diameter
Combat Sub42mm
Monster42.4mm
Power Reserve
Combat Sub38h
Monster41h
Water Resistance
Combat Sub200m
Monster200m
MSRP
Combat Sub$1,850
Monster$550

Full specifications

Case

6 specs
Diameter
42mm
42.4mm
Thickness
10.45mm
13.4mm
Lug-to-Lug
49.4mm
Lug Width
22mm
20mm
Finish
Caseback

Crystal & Dial

6 specs
Crystal
Sapphire
Hardlex
Crystal Shape
AR Coating
Dial Color
Black
Indices
Lume
Luminous
LumiBrite on hands, index(es) and bezel

Movement

5 specs
Caliber
Sellita SW200-1
4R36
Beat Rate
28,800 vph
0 vph
Power Reserve
38h
41h
Jewels
26
24
Complications
Date
None

Pricing

1 specs
MSRP
$1,850
$550
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