Seestern Ocean Star S450-2.ECvsSeiko 5KX

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Seestern Ocean Star S450-2.EC at true scale

Ocean Star S450-2.EC

Seiko 5KX at true scale

5KX

Diameter

40mm

42.5mm

Lug-to-Lug

n/a

46mm

Thickness

n/a

13.4mm

Water Resistance

100m

100m

Power Reserve

n/a

41h

MSRP

$225

lowest

$350

Movement

Automatic

Seiko 4R36

Case

4 specs
Diameter
40mm
42.5mm
Thickness
n/a
13.4mm
Lug-to-Lug
n/a
46mm
Lug Width
n/a
22mm

Crystal & Dial

3 specs
Crystal
Sapphire
Hardlex
Dial Color
n/a
Blue
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
n/a
Seiko 4R36
Power Reserve
0h
41h
Jewels
0
24

Pricing

1 specs
MSRP
$225
$350
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Seestern Ocean Star S450-2.EC

Owners widely praise the Seestern Ocean Star S450-2.EC's bracelet and clasp, calling them exemplary for the price. One owner notes the overall quality and its automatic Seiko NH35 movement, finding it a compelling alternative for those seeking a Doxa-like aesthetic. A reviewer suggests improvements could be made to the case finishing and handset size, while highlighting the desirable cast lume. Overall, owners rate the Seestern Ocean Star S450-2.EC highly for its exceptional bracelet and clasp at the price point, with the cast lume also being a noted positive.

Seiko 5KX

Owners widely praise the Seiko 5KX for its strong lume and value, with many reporting accuracy within +/-5 to 10 seconds per day, though some experience +/-1 second. The 42.5mm case is noted to wear smaller, and the watch offers a comfortable feel for many. Some owners are split on the bracelet quality, with opinions ranging from "cheaper side" with hollow links to "flimsy-feeling" jubilee. A few quality control issues have been reported, including a failed bezel clickspring and misaligned components. The Seiko 5KX is seen by some as a worthy successor to the original SKX, offering an upgraded movement with hacking and hand-winding capabilities, though others lament the loss of ISO certification and a screw-down crown. Overall, owners rate the Seiko 5KX highly for its excellent lume and value proposition, making it a popular choice for everyday wear.

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