Side by side

Seestern S450 Ocean StarvsZelos Aurora Moonphase

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

S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299
Aurora Moonphase
ZelosAurora Moonphase
MSRP $949

At a glance

14 of 29 specs differ
Diameter
S450 Ocean Star40mm
Aurora Moonphase39mm
Power Reserve
S450 Ocean Star41h
Aurora Moonphase40h
Water Resistance
S450 Ocean Star100m
Aurora Moonphase200m
MSRP
S450 Ocean Star$299
Aurora Moonphase$949

Full specifications

Case

6 specs
Category
Diver
Moonphase
Diameter
40mm
39mm
Thickness
12mm
12.5mm
Lug-to-Lug
48mm
39mm
Material
316L Stainless Steel
Titanium
Water Resistance
100m
200m

Crystal & Dial

2 specs
Dial Color
White
Meteorite
Lume
Tritium
None

Movement

5 specs
Caliber
TMI NH35A
Sellita SW288
Beat Rate
21,600 vph
28,800 vph
Power Reserve
41h
40h
Jewels
24
25
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$949

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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 Aurora Moonphase

Owners widely praise Zelos for offering excellent value, solid build quality, and enthusiast-friendly designs, with unique dial variants often selling out quickly. The Zelos Aurora Moonphase is noted as a desirable model, though finding one can be challenging. Some owners find Zelos's designs, including those of the Aurora line, to be too flashy for everyday wear, preferring a more subdued aesthetic. One owner reported their Zelos Aurora Nebula 38mm running at -5.3 seconds per day. Overall, owners rate the Zelos Aurora Moonphase highly for its desirable microbrand status and unique dial appeal.

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