Side by side

Glycine Combat Sub SportvsSeiko 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 Sport

Owners widely praise the Glycine Combat Sub Sport for its exceptional value, thin profile, and solid build quality, often noting its finishing and wearability as superior for its price point. Reviewers consistently flag its slim case, with measurements around 10.4mm to 10.8mm, and appreciate its non-homage design and comfortable lug curvature. Accuracy figures vary, with one owner reporting only 2 seconds per day loss, while another notes their Sellita SW200 movement runs at +6 to +9 seconds per day. Some owners report inconsistent power reserve not reaching the advertised 42 hours and find the lume sub-par for nighttime legibility. A few also mention sharp bracelet edges and a potentially short bracelet for larger wrists, and one owner dislikes the "COMBAT" text on the dial. On balance, owners and reviewers rate the Glycine Combat Sub Sport highly for its impressive thinness and value as a Swiss automatic diver.

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

17 of 29 specs differ
Diameter
Combat Sub Sport42mm
Prospex Sea43.5mm
Power Reserve
Combat Sub Sport38h
Prospex Sea70h
Water Resistance
Combat Sub Sport200m
Prospex Sea200m
MSRP
Combat Sub Sport$1,650
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
Caseback

Crystal & Dial

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

Movement

5 specs
Caliber
Sellita SW200-1
6R35
Beat Rate
28,800 vph
0 vph
Power Reserve
38h
70h
Jewels
26
24
Complications
Date
None

Pricing

1 specs
MSRP
$1,650
$1,500
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