Side by side

Bremont SupernovavsGrand Seiko SBGW257

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

Supernova
BremontSupernova
MSRP $8,250
SBGW257
Grand SeikoSBGW257
MSRP $38,000

At a glance

13 of 29 specs differ
Diameter
Supernova41mm
SBGW25738mm
Power Reserve
Supernova40h
SBGW25772h
Water Resistance
Supernova100m
SBGW25730m
MSRP
Supernova$8,250
SBGW257$38,000

Full specifications

Case

7 specs
Category
Chronograph
Dress
Diameter
41mm
38mm
Thickness
14.4mm
10.9mm
Lug-to-Lug
45.8mm
Lug Width
14.4mm
19mm
Material
316L Stainless Steel (DLC coated)
Platinum
Water Resistance
100m
30m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Chronograph Bracelet
Black

Movement

3 specs
Caliber
9S64
Type
Automatic
Manual
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$8,250
$38,000

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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 Supernova

The Bremont Supernova is praised for its new ENG375 movement, big date, and power reserve indicator, with its 40mm steel case featuring mixed finishing and an integrated bracelet. Owners note good but not great lume, well-balanced proportions, and a premium feel for its price, despite a 173-gram weight. Some community members find the design derivative and the £8,000 price tag overly optimistic, with mixed views on the date window and crown guard. The proprietary Trip-Tick case construction offers shock protection, and the movement provides a 65-hour power reserve. Overall, owners and reviewers highlight the integrated bracelet and proprietary movement as key strengths of the Bremont Supernova.

Grand Seiko SBGW257

The Grand Seiko SBGW257 is a platinum dress watch praised for its refined, subtle luxury and classic design. Reviewers highlight its 38mm diameter and 10.9mm thickness as near-perfect sizing for a dress watch. The watch features an 18k white gold dial with a sunray-brushed silver finish and gold hour markers, complemented by a refined application of the Grand Seiko wordmark. It is powered by the manual-wind Caliber 9S64 movement, offering a 72-hour power reserve and an accuracy rating of +5 to -3 seconds per day. The Grand Seiko SBGW257 is priced at €39,000. On balance, reviewers appreciate the Grand Seiko SBGW257 for its exquisite finishing and classic proportions, embodying a quiet luxury.

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