Sternglas MarusvsSeiko 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.

Sternglas Marus at true scale

Marus

Seiko 5KX at true scale

5KX

Diameter

42mm

42.5mm

Lug-to-Lug

53.8mm

46mm

lowest

Thickness

14mm

13.4mm

lowest

Water Resistance

200m

highest

100m

Power Reserve

42h

highest

41h

MSRP

$485

$350

lowest

Movement

Miyota 8215

Seiko 4R36

Case

5 specs
Diameter
42mm
42.5mm
Thickness
14mm
13.4mm
Lug-to-Lug
53.8mm
46mm
Lug Width
20mm
22mm
Water Resistance
200m
100m

Crystal & Dial

4 specs
Crystal
Sapphire
Hardlex
AR Coating
Yes
n/a
Dial Color
n/a
Blue
Lume
Luminova grün
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Miyota 8215
Seiko 4R36
Power Reserve
42h
41h
Jewels
n/a
24

Pricing

1 specs
MSRP
$485
$350
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Reviews

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

Sternglas Marus

Owners widely praise the Sternglas Marus for its exceptionally well-built feel and bezel action, described as the best in its price range with a satisfying click and no play. Despite its 42mm diameter and 52mm lug-to-lug, the watch fits surprisingly well even on slim wrists, offering a substantial presence. The Sternglas Marus is considered an affordable and fun starting point for a watch collection.

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.