Side by side

Seestern S450 Ocean StarvsLongines LONGINES SPIRIT ZULU TIME TITANIUM

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

S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299
LONGINES SPIRIT ZULU TIME TITANIUM
LonginesLONGINES SPIRIT ZULU TIME TITANIUM
MSRP $4,850

At a glance

14 of 29 specs differ
Diameter
S450 Ocean Star40mm
LONGINES SPIRIT ZULU TIME TITANIUM39mm
Power Reserve
S450 Ocean Star41h
LONGINES SPIRIT ZULU TIME TITANIUM40h
Water Resistance
S450 Ocean Star100m
LONGINES SPIRIT ZULU TIME TITANIUM100m
MSRP
S450 Ocean Star$299
LONGINES SPIRIT ZULU TIME TITANIUM$4,850

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
40mm
39mm
Thickness
12mm
13.5mm
Lug-to-Lug
48mm
46.8mm
Lug Width
20mm
21mm
Material
316L Stainless Steel
Titanium

Crystal & Dial

2 specs
Dial Color
White
Anthracite
Lume
Tritium
None

Movement

5 specs
Caliber
TMI NH35A
L844.4
Beat Rate
21,600 vph
28,800 vph
Power Reserve
41h
40h
Jewels
24
25
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$4,850

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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 SPIRIT ZULU TIME TITANIUM

Owners and reviewers widely praise the LONGINES SPIRIT ZULU TIME TITANIUM for its lightweight comfort, excellent finishing, and smooth winding action, with many considering it great value. The COSC-certified movement is noted for its accuracy, with figures ranging from +2 seconds per day to within -4 to +6 seconds per day, and an 80-hour power reserve is consistently reported. Some owners find the rotor can be loud, and the bracelet's lack of tool-free micro-adjustment is a recurring point of critique, though the overall design is considered attractive and understated. On balance, the LONGINES SPIRIT ZULU TIME TITANIUM is highly regarded for its refined travel watch design and accessible price point.

From video reviewers

The lightweight grade 5 titanium case and true GMT function are praised. The watch's value at its price point is considered excellent.

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