Side by side

Sternglas SediusvsGrand Seiko STGK031

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

What people say

Owners + reviewers, side by side

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

Sternglas Sedius

The Sternglas Sedius is widely praised for its harmonious blend of Bauhaus minimalism and Art Deco elegance, featuring a well-balanced sector dial and a smooth-sweeping seconds hand from its Seiko VH31 meca-quartz movement. Owners and reviewers note its pleasing wearability due to the case shape and slender lugs, and it is considered an affordable option with a good price-performance ratio. One reviewer flags legibility issues on the black dial variant, while the blue-on-white offers crispness. The Sternglas Sedius lacks a date complication and features a double-domed sapphire crystal. Overall, owners and reviewers rate the Sternglas Sedius highly for its classy Art Deco aesthetic and value.

Grand Seiko STGK031

Grand Seiko STGK031 owners widely praise its subtle, light pink dial that shifts to appear white or silver depending on lighting, its refined 30mm case size, and its simple elegance. Some find the 30mm sizing perfect for wearability, with one owner noting it is ideal for those who find 38mm watches too large. The Zaratsu polishing is also a noted strength. However, the Calibre 9S27 movement has a 50-hour power reserve and an accuracy range of +8 to -3 seconds per day, which some consider modest for the price. On balance, owners and reviewers rate the Grand Seiko STGK031 highly for its versatile dial and refined 30mm case.

From video reviewers

The 50-hour power reserve of the Calibre 9S27 movement is a shared strength. The 36mm lug-to-lug measurement is a weakness. Reviewers disagreed on the premium feel of the polished stainless steel case and bracelet compared to Zaratsu polishing.

At a glance

12 of 29 specs differ
Diameter
Sedius40mm
STGK03130mm
Power Reserve
Sedius
STGK03150h
Water Resistance
Sedius50m
STGK031100m
MSRP
Sedius$301
STGK031$6,600

Full specifications

Case

5 specs
Diameter
40mm
30mm
Thickness
8mm
10.5mm
Lug-to-Lug
47mm
36.2mm
Lug Width
20mm
15mm
Water Resistance
50m
100m

Crystal & Dial

2 specs
AR Coating
Yes
Dial Color

Movement

4 specs
Caliber
TMI VH31
9S27
Type
Quartz
Automatic
Power Reserve
50h
Jewels
0

Pricing

1 specs
MSRP
$301
$6,600
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