Side by side

Bremont Supermarine 300MvsGrand Seiko SBGE285

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
SBGE285
Grand SeikoSBGE285
MSRP $8,900

At a glance

13 of 29 specs differ
Diameter
Supermarine 300M40mm
SBGE28541mm
Power Reserve
Supermarine 300M40h
SBGE28572h
Water Resistance
Supermarine 300M300m
SBGE285100m
MSRP
Supermarine 300M$3,550
SBGE285$8,900

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
40mm
41mm
Thickness
12mm
13.9mm
Lug-to-Lug
48.3mm
Lug Width
20mm
22mm
Material
904L Stainless Steel
Titanium
Water Resistance
300m
100m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Green
Black

Movement

3 specs
Caliber
BE-92AE
9R66
Type
Automatic
Spring Drive
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$3,550
$8,900

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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 Supermarine 300M

The Bremont Supermarine 300M is praised for its comfortable 40mm and 42mm case sizes, with owners noting the 42mm wears well on smaller wrists due to its lug design. One owner highlights the 13mm thinness of the 40mm case, considered compact for a 300m diver. The watch is priced at $1375. On balance, owners and reviewers appreciate the Bremont Supermarine 300M for its wearability and compact dimensions, especially for a dive watch.

Grand Seiko SBGE285

The Grand Seiko SBGE285 is widely praised for its textured dial, high-intensity titanium case with Zaratsu polishing, and Evolution 9 design, which reviewers consider epitomizes modern Grand Seiko. Owners and reviewers highlight its refined yet sporty appearance and lightweight titanium construction, noting it wears smaller than its 41mm dimensions. The 9R66 Spring Drive movement is lauded for its precision, with accuracy reported at ±1 second per day. One owner notes the watch head shows no wear and there are no scratches on the back of the lugs, indicating excellent overall condition. Overall, owners and reviewers rate the Grand Seiko SBGE285 highly for its blend of sophisticated finishing, comfortable wearability, and precise Spring Drive GMT functionality.

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