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 $3,950

At a glance

22 of 29 specs differ
Diameter
S450 Ocean Star40mm
MASTER COLLECTION29mm
Power Reserve
S450 Ocean Star41h
MASTER COLLECTION45h
Water Resistance
S450 Ocean Star100m
MASTER COLLECTION30m
MSRP
S450 Ocean Star$299
MASTER COLLECTION$3,950

Full specifications

Case

9 specs
Category
Diver
Diameter
40mm
29mm
Thickness
12mm
9mm
Lug-to-Lug
48mm
34.5mm
Lug Width
20mm
15mm
Material
316L Stainless Steel
18k Yellow Gold
Finish
Brushed and polished
Water Resistance
100m
30m
Caseback
Solid

Crystal & Dial

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

Movement

7 specs
Caliber
TMI NH35A
L592.5
Beat Rate
21,600 vph
0 vph
Power Reserve
41h
45h
Jewels
24
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$3,950

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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 finishing and value, with owners highlighting its classic design and dressy profile. Reviewers note the beautiful dial execution, featuring engraved Breguet numerals and snailed subdials on some variants, and the smooth winding feel of the automatic movements. The Master Collection Chronograph is specifically lauded for its column wheel chronograph and moon phase complication at its price point. However, some owners find the bracelet difficult to adjust due to a lack of micro-adjustments, and one reviewer criticized the case finishing and pushers on the chronograph as homogenous and cheap-feeling. The Master Collection Annual Calendar's 30m water resistance is considered light by one source. Overall, owners and reviewers rate the Longines MASTER COLLECTION highly for its classical styling and exceptional value, particularly for its complications and finishing at the price.

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