Side by side

Seestern S450 Ocean StarvsLongines MASTER COLLECTION

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

S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299
MASTER COLLECTION
LonginesMASTER COLLECTION
MSRP $2,950

At a glance

22 of 29 specs differ
Diameter
S450 Ocean Star40mm
MASTER COLLECTION34mm
Power Reserve
S450 Ocean Star41h
MASTER COLLECTION72h
Water Resistance
S450 Ocean Star100m
MASTER COLLECTION30m
MSRP
S450 Ocean Star$299
MASTER COLLECTION$2,950

Full specifications

Case

9 specs
Category
Diver
Diameter
40mm
34mm
Thickness
12mm
9.2mm
Lug-to-Lug
48mm
41.7mm
Lug Width
20mm
18mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed and polished
Water Resistance
100m
30m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
White
Silver
Indices
Applied
Lume
Tritium
None

Movement

7 specs
Caliber
TMI NH35A
L888.5
Beat Rate
21,600 vph
0 vph
Power Reserve
41h
72h
Jewels
24
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$2,950

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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.

Longines MASTER COLLECTION

The Longines Master Collection is widely praised for its excellent value and refined design, with owners and reviewers highlighting its beautiful dials, often featuring Breguet numerals and snailed subdials, and its impressive case and bracelet finishing. The collection is consistently described as traditional and dress-oriented, offering features like column-wheel chronographs and moon phases at competitive price points. However, some owners note drawbacks such as the subdial cutting off numerals, uninspiring pushers and crowns, and a lack of micro-adjustments on the bracelet for a perfect fit. Accuracy figures are not consistently reported across sources, with one owner noting a chronograph hour counter that doesn't always reset to zero. Overall, the Longines Master Collection is highly regarded by owners and reviewers for its sophisticated aesthetics and strong value proposition, particularly for its dress watch and chronograph models.

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