Side by side

Glycine Combat Sub Sport GMT BronzevsSeestern S450 Ocean Star

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

Combat Sub Sport GMT Bronze
GlycineCombat Sub Sport GMT Bronze
MSRP $2,995
S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299

At a glance

18 of 29 specs differ
Diameter
Combat Sub Sport GMT Bronze42mm
S450 Ocean Star40mm
Power Reserve
Combat Sub Sport GMT Bronze48h
S450 Ocean Star41h
Water Resistance
Combat Sub Sport GMT Bronze200m
S450 Ocean Star100m
MSRP
Combat Sub Sport GMT Bronze$2,995
S450 Ocean Star$299

Full specifications

Case

8 specs
Category
GMT
Diver
Diameter
42mm
40mm
Lug-to-Lug
48mm
Lug Width
22mm
20mm
Material
Bronze
316L Stainless Steel
Finish
Brushed and polished
Water Resistance
200m
100m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Blue
White
Indices
Applied
Lume
Luminous
Tritium

Movement

4 specs
Caliber
SW330-2
TMI NH35A
Beat Rate
28,800 vph
21,600 vph
Power Reserve
48h
41h
Jewels
25
24

Pricing

1 specs
MSRP
$2,995
$299

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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 Sport GMT Bronze

Owners report the Glycine Combat Sub Sport GMT Bronze offers a unique aesthetic and remarkable value, often found at significant discounts. One owner notes difficulty matching straps with the bronze dial and that seawater exposure can cause rapid, undesirable patina, suggesting regular cleaning mitigates issues. Another owner flags sub-par lume that is difficult to read at night and an inconsistent power reserve that may not reach the advertised 42 hours. On balance, owners value the Glycine Combat Sub Sport GMT Bronze for its unique aesthetic and strong value proposition, though lume and power reserve performance are noted concerns.

Seestern S450 Ocean Star

Owners widely praise the Seestern S450 Ocean Star's Yachtmaster-style case and flawless bracelet finishing, with one owner noting the ST2130 movement keeps good time. The bezel action is described as having individual notches but feeling like a friction bezel, while another owner flags the bezel and crown action as smooth with perfect alignment. Lume is a point of contention, with one source describing it as a nice cool blue with ice-white application, while others note it as weak or not matching Prospex standards, despite using BGW-9. The watch is considered a "big boy" ideal for larger wrists (19cm+), potentially too large for 17cm wrists due to its size and non-tapering bracelet. Overall, owners rate the Seestern S450 Ocean Star highly for its build quality and finishing at the price point, despite some reservations about its size and lume intensity.

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