Side by side

Seestern S450 Ocean StarvsGrand Seiko SLGA019

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

S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299
SLGA019
Grand SeikoSLGA019
MSRP $11,000

At a glance

15 of 29 specs differ
Diameter
S450 Ocean Star40mm
SLGA01940mm
Power Reserve
S450 Ocean Star41h
SLGA019120h
Water Resistance
S450 Ocean Star100m
SLGA019100m
MSRP
S450 Ocean Star$299
SLGA019$11,000

Full specifications

Case

5 specs
Category
Diver
Dress
Thickness
12mm
11.8mm
Lug-to-Lug
48mm
47.9mm
Lug Width
20mm
22mm
Material
316L Stainless Steel
Titanium

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Dial Color
White
Black
Lume
Tritium
None

Movement

6 specs
Caliber
TMI NH35A
9RA2
Type
Automatic
Spring Drive
Beat Rate
21,600 vph
28,800 vph
Power Reserve
41h
120h
Jewels
24
25
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$11,000

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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.

Grand Seiko SLGA019

Owners and reviewers widely praise the Grand Seiko SLGA019 for its stunning "Minamo" dial, inspired by Lake Suwa, with its intricate texture and finishing. The Evolution 9 case, constructed from lightweight Grade 5 titanium, is lauded for its refinement and comfortable wearability. The 9RA2 Spring Drive movement is noted for exceptional accuracy, with one owner documenting a loss of only 0.5 seconds in a week. However, some criticism is directed at the bracelet's lack of micro-adjustment and its pin-and-collar system, and the movement's finishing is described as somewhat plain. The retail price is also flagged as high. Overall, the consensus is that the Grand Seiko SLGA019 is a highly refined and accurate watch, with its dial and comfortable titanium case being the primary reasons for its strong reception.

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