Side by side

Seestern S450 Ocean StarvsHorage Supersede 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
Supersede GMT
HorageSupersede GMT
MSRP $7,270

At a glance

16 of 29 specs differ
Diameter
S450 Ocean Star40mm
Supersede GMT39.5mm
Power Reserve
S450 Ocean Star41h
Supersede GMT72h
Water Resistance
S450 Ocean Star100m
Supersede GMT200m
MSRP
S450 Ocean Star$299
Supersede GMT$7,270

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
40mm
39.5mm
Thickness
12mm
9.85mm
Lug-to-Lug
48mm
46.29mm
Lug Width
20mm
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
100m
200m

Crystal & Dial

3 specs
AR Coating
Inner
No
Dial Color
White
Black
Lume
Tritium
Super-LumiNova

Movement

5 specs
Caliber
TMI NH35A
Horage K2
Beat Rate
21,600 vph
28,800 vph
Power Reserve
41h
72h
Jewels
24
25
Complications
GMT, Date
GMT

Pricing

1 specs
MSRP
$299
$7,270

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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.

Horage Supersede GMT

The Horage Supersede GMT is widely praised for its innovative micro-rotor movement and impressive finishing. Owners and reviewers highlight its value as a true GMT sports watch, noting the compact 39.5mm case and 200m water resistance. The K2 movement offers a 72-hour power reserve, and updates include an optional platinum rotor, a luminous seconds hand tip, and a new micro-adjustable clasp. One potential hesitation for buyers is the inability to see the watch in person. Overall, owners and reviewers rate the Horage Supersede GMT highly for its innovative micro-rotor movement and excellent value.

From video reviewers

The Horage Supersede GMT features a unique case design that blends different styles. A notable strength is its in-house K2 micro-rotor movement. One weakness is the relatively average lume brightness.

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