Bremont Supermarine 300MvsMinus-8 Field 1S

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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Supermarine 300M

Field 1S
Diameter
40mm
39mm
Lug-to-Lug
n/a
52mm
Thickness
12mm
lowest
12.5mm
Water Resistance
300m
highest
200m
Power Reserve
n/a
41h
MSRP
$3,550
$298
lowest
Movement
Bremont BE-92AE
Seiko NH35
Case
5 specsCrystal & Dial
1 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Bremont Supermarine 300M is praised for its comfortable 40mm case, which some owners find wears well even on smaller wrists due to its lug design, outperforming some 40mm watches. One forum contributor notes the 40mm case is relatively compact for a 300m diver and is priced at $1375. A reviewer found the 40mm case comfortable. On balance, owners and reviewers appreciate the Bremont Supermarine 300M's wearable 40mm case size and comfortable wearability.
Owners widely praise the Minus-8 Field 1S for its value at $450, modern styling, and titanium case. Reviewers highlight the detailed, layered blackout dial with a surprisingly readable red-on-black scheme. However, the case is described as thick and tall, and the rounded rectangular crown is frustrating to manipulate. Some owners note the Seiko NH35A movement keeps time around +20 seconds per day, and the sapphire crystal creates significant reflections that hinder legibility in direct sunlight. Overall, owners and reviewers value the Minus-8 Field 1S for its dial design and titanium construction, despite noted legibility and ergonomic drawbacks.
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