Side by side

Seestern S450 Ocean StarvsYema Superman Heritage GMT Bronze

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

S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299
Superman Heritage GMT Bronze
YemaSuperman Heritage GMT Bronze
MSRP $1,499

At a glance

16 of 29 specs differ
Diameter
S450 Ocean Star40mm
Superman Heritage GMT Bronze39mm
Power Reserve
S450 Ocean Star41h
Superman Heritage GMT Bronze40h
Water Resistance
S450 Ocean Star100m
Superman Heritage GMT Bronze300m
MSRP
S450 Ocean Star$299
Superman Heritage GMT Bronze$1,499

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
40mm
39mm
Thickness
12mm
11.7mm
Lug-to-Lug
48mm
Lug Width
20mm
19mm
Material
316L Stainless Steel
Bronze
Water Resistance
100m
300m

Crystal & Dial

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

Movement

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

Pricing

1 specs
MSRP
$299
$1,499

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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.

Yema Superman Heritage GMT Bronze

The Yema Superman Heritage GMT Bronze is widely praised for its comfortable 39mm wearability and the value it offers, featuring an in-house GMT movement and bronze case. Owners and reviewers highlight the firm 120-click bezel, the impressive gilt markers and gradient dial, and the exceptionally soft and comfortable vintage leather strap. Some prefer a ceramic insert over aluminum, and one owner noted the bracelet clasp was stiff initially. The lume on the hands appears pale compared to the dial's richer coloration, and the bezel lock may not sit perfectly centered. The Yema Superman Heritage GMT Bronze is considered a bargain, with pricing noted around 700-750 Euros. On balance, owners and reviewers rate the Yema Superman Heritage GMT Bronze highly for its exceptional value and comfortable wearability.

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