Side by side

Seestern S450 Ocean StarvsZelos Blacktip 200m GMT

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

S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299
Blacktip 200m GMT
ZelosBlacktip 200m GMT
MSRP $499

At a glance

14 of 29 specs differ
Diameter
S450 Ocean Star40mm
Blacktip 200m GMT41mm
Power Reserve
S450 Ocean Star41h
Blacktip 200m GMT40h
Water Resistance
S450 Ocean Star100m
Blacktip 200m GMT200m
MSRP
S450 Ocean Star$299
Blacktip 200m GMT$499

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
40mm
41mm
Thickness
12mm
13mm
Lug-to-Lug
48mm
41mm
Water Resistance
100m
200m

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
White
MOP
Lume
Tritium
None

Movement

5 specs
Caliber
TMI NH35A
Seiko NH34 GMT
Beat Rate
21,600 vph
28,800 vph
Power Reserve
41h
40h
Jewels
24
25
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$499

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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.

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.

Zelos Blacktip 200m GMT

Owners widely praise the Zelos Blacktip 200m GMT's solid bracelet construction and excellent bezel action. The watch has sold out quickly, indicating strong demand. Overall, owners rate the Zelos Blacktip 200m GMT highly for its robust build and desirable availability.

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