Side by side

Seestern S450 Ocean StarvsLongines SPIRIT PILOT

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

S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299
SPIRIT PILOT
LonginesSPIRIT PILOT
MSRP $3,100

At a glance

20 of 29 specs differ
Diameter
S450 Ocean Star40mm
SPIRIT PILOT39mm
Power Reserve
S450 Ocean Star41h
SPIRIT PILOT72h
Water Resistance
S450 Ocean Star100m
SPIRIT PILOT100m
MSRP
S450 Ocean Star$299
SPIRIT PILOT$3,100

Full specifications

Case

7 specs
Category
Diver
Pilot
Diameter
40mm
39mm
Thickness
12mm
11.5mm
Lug-to-Lug
48mm
47.2mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed and polished
Caseback
Solid
Screw-down case back

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Both sides
Dial Color
White
Black
Indices
Applied
Applied Arabic numerals
Lume
Tritium
Super-LumiNova

Movement

7 specs
Caliber
TMI NH35A
L888.4
Beat Rate
21,600 vph
25,200 vph
Power Reserve
41h
72h
Jewels
24
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
GMT, Date
Hours, minutes, seconds

Pricing

1 specs
MSRP
$299
$3,100

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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 PILOT

Owners widely praise the Longines Spirit Pilot for its exceptional finishing, featuring sharp edges and crisp transitions, and its improved wearability thanks to a reduced 39mm case size and 47.2mm lug-to-lug distance. Reviewers and owners alike highlight the clean, balanced dial with gilt-toned accents that play with light, and its excellent legibility and lume. The L888.4 automatic movement is noted for its 72-hour power reserve and COSC certification. Some owners feel the Longines Spirit Pilot wears larger than its 39mm diameter and express disappointment over the removal of the five stars from the dial, while others find its bracelet endlinks long and lament the lack of quick-release. One owner voices concern over the serviceability of exclusive movements. Overall, owners rate the Longines Spirit Pilot highly for its modern icon status and value, feeling it wears more expensively than its price point suggests.

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