Side by side

Bremont Isle of Man TT Limited EditionvsSeestern S450 Ocean Star

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

Isle of Man TT Limited Edition
BremontIsle of Man TT Limited Edition
MSRP $6,600
S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299

At a glance

13 of 29 specs differ
Diameter
Isle of Man TT Limited Edition43mm
S450 Ocean Star40mm
Power Reserve
Isle of Man TT Limited Edition40h
S450 Ocean Star41h
Water Resistance
Isle of Man TT Limited Edition
S450 Ocean Star100m
MSRP
Isle of Man TT Limited Edition$6,600
S450 Ocean Star$299

Full specifications

Case

6 specs
Category
Chronograph
Diver
Diameter
43mm
40mm
Thickness
15.8mm
12mm
Lug-to-Lug
48mm
Lug Width
22mm
20mm
Water Resistance
100m

Crystal & Dial

1 specs
Lume
None
Tritium

Movement

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

Pricing

1 specs
MSRP
$6,600
$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.

Bremont Isle of Man TT Limited Edition

Some enthusiasts find the speedometer dial gimmicky and tacky. The Bremont Isle of Man TT Limited Edition is a 43mm chronograph with a Trip-Tick case and a chronometer-certified BE-50AV movement offering a 56-hour power reserve. Overall, owners and reviewers find the speedometer dial to be a polarizing design element.

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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