Side by side

Grand Seiko STGK031vsWolbrook Skindiver WT Automatic

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

STGK031
Grand SeikoSTGK031
MSRP $6,600
Skindiver WT Automatic
WolbrookSkindiver WT Automatic
MSRP $498

At a glance

13 of 29 specs differ
Diameter
STGK03130mm
Skindiver WT Automatic40mm
Power Reserve
STGK03150h
Skindiver WT Automatic40h
Water Resistance
STGK031100m
Skindiver WT Automatic150m
MSRP
STGK031$6,600
Skindiver WT Automatic$498

Full specifications

Case

7 specs
Category
Dress
GMT
Diameter
30mm
40mm
Thickness
10.5mm
13mm
Lug-to-Lug
36.2mm
Lug Width
15mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
100m
150m

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
Yes
Inner
Dial Color
Black
Steel

Movement

2 specs
Caliber
9S27
Miyota 8315
Power Reserve
50h
40h

Pricing

1 specs
MSRP
$6,600
$498

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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.

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.

Wolbrook Skindiver WT Automatic

Owners widely praise the Wolbrook Skindiver WT Automatic for its attractive retro aesthetic, comfortable wearability, and good value, with many highlighting its striking green dial, box sapphire crystal, and well-executed Beads of Rice bracelet. Some reviewers note the Miyota 8315 movement is adjusted to ±15 seconds per day, and one owner found the steel bracelet's finishing did not match the watch as well as the rubber straps. A minority of owners express disappointment with the lume, bezel wobble, and a perceived lack of finishing refinement, with one reviewer ultimately not recommending the watch. Overall, owners rate the Wolbrook Skindiver WT Automatic highly for its vintage charm and comfortable bracelet at the price point.

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