Side by side

Spinnaker Tesei Bronze SwissvsGrand Seiko STGK031

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

Tesei Bronze Swiss
SpinnakerTesei Bronze Swiss
MSRP $850
STGK031
Grand SeikoSTGK031
MSRP $6,600

At a glance

12 of 29 specs differ
Diameter
Tesei Bronze Swiss43mm
STGK03130mm
Power Reserve
Tesei Bronze Swiss40h
STGK03150h
Water Resistance
Tesei Bronze Swiss300m
STGK031100m
MSRP
Tesei Bronze Swiss$850
STGK031$6,600

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
43mm
30mm
Thickness
16mm
10.5mm
Lug-to-Lug
52mm
36.2mm
Lug Width
22mm
15mm
Material
Bronze
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Green
Black

Movement

2 specs
Caliber
Sellita SW200-1
9S27
Power Reserve
40h
50h

Pricing

1 specs
MSRP
$850
$6,600

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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.

Spinnaker Tesei Bronze Swiss

Owners praise the Spinnaker Tesei Bronze Swiss for its incredible macro-level detail and sharp design, noting its bronze case, ceramic bezel, and wave dial. The inclusion of a Sellita SW200 Swiss movement is highlighted. One owner expressed a desire for a smaller 39-40mm variant, stating it would be their ultimate bronze diver if such a size were offered. On balance, owners rate the Spinnaker Tesei Bronze Swiss highly for its detailed finishing and bronze diver aesthetic.

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.

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