Side by side

Bremont S502vsGrand Seiko STGK031

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

S502
BremontS502
MSRP $5,100
STGK031
Grand SeikoSTGK031
MSRP $6,600

At a glance

11 of 29 specs differ
Diameter
S50243mm
STGK03130mm
Power Reserve
S50240h
STGK03150h
Water Resistance
S502500m
STGK031100m
MSRP
S502$5,100
STGK031$6,600

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
43mm
30mm
Thickness
16.5mm
10.5mm
Lug-to-Lug
36.2mm
Lug Width
16.5mm
15mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
500m
100m

Crystal & Dial

1 specs
AR Coating
Inner
Yes

Movement

2 specs
Caliber
BE-93-2AE
9S27
Power Reserve
40h
50h

Pricing

1 specs
MSRP
$5,100
$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.

Bremont S502

The Bremont S502 is widely praised for its attractive full-stealth, black DLC treatment, and the beige lume that complements its Spec Ops design, with a burnt-orange GMT hand enhancing legibility. Owners find the watch handsome and cool, appreciating the 'black & tan' aesthetic suitable for hard wear. The Bremont S502 features a 502m water-resistance rating and a 42-hour power reserve, powered by a chronometer-rated Bremont BE-93-2AV automatic movement. While many like the NATO strap for its aesthetic and how it ties in with the PVD metalwork, some prefer the original black rubber strap for its comfort and custom fit. On balance, owners and reviewers rate the Bremont S502 highly for its stealthy aesthetic and robust build.

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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