Side by side

Glycine Combat SubvsSeiko Prospex Sea

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 Prospex Sea

Seiko Prospex Sea owners and reviewers praise its Marinemaster-style aesthetic, excellent case finishing, and impressive LumiBrite lume. The watch is powered by the 6R15 movement with a 50-hour power reserve and comes with both a steel bracelet and a silicone strap. Some owners find the Seiko Prospex Sea to be a great value and a suitable first "proper" watch, while others report it is uncomfortably big, thick, and heavy on smaller wrists. Reviewers note the GMT function is secondary with a less prominent scale, and the bezel's quieter clicks may not appeal to all. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its classic design and finishing at its price point.

At a glance

15 of 29 specs differ
Diameter
Combat Sub42mm
Prospex Sea43.5mm
Power Reserve
Combat Sub38h
Prospex Sea70h
Water Resistance
Combat Sub200m
Prospex Sea200m
MSRP
Combat Sub$1,850
Prospex Sea$1,500

Full specifications

Case

6 specs
Diameter
42mm
43.5mm
Thickness
10.45mm
13.3mm
Lug-to-Lug
51mm
Material
Stainless Steel
Titanium
Finish
Brushed and polished
Caseback
Solid

Crystal & Dial

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

Movement

4 specs
Caliber
Sellita SW200-1
Seiko 6R35
Power Reserve
38h
70h
Jewels
26
24
Complications
Date
None

Pricing

1 specs
MSRP
$1,850
$1,500
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