Side by side

Bremont Supermarine 300MvsGlycine Combat Sub Box Ceramic

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
Combat Sub Box Ceramic
GlycineCombat Sub Box Ceramic
MSRP $1,800

At a glance

16 of 29 specs differ
Diameter
Supermarine 300M40mm
Combat Sub Box Ceramic41mm
Power Reserve
Supermarine 300M40h
Combat Sub Box Ceramic38h
Water Resistance
Supermarine 300M300m
Combat Sub Box Ceramic200m
MSRP
Supermarine 300M$3,550
Combat Sub Box Ceramic$1,800

Full specifications

Case

6 specs
Diameter
40mm
41mm
Thickness
12mm
12.75mm
Material
904L Stainless Steel
Ceramic
Finish
Brushed and polished
Water Resistance
300m
200m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Green
Grey
Indices
Applied
Lume
None
Luminous

Movement

4 specs
Caliber
BE-92AE
SW200-1
Power Reserve
40h
38h
Jewels
25
26
Complications
None
Date

Pricing

1 specs
MSRP
$3,550
$1,800

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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.

Glycine Combat Sub Box Ceramic

Owners widely praise the Glycine Combat Sub Box Ceramic for its exceptional thinness at 10.4mm for a 42mm diver, perfect proportions for small wrists, and unique, non-homage aesthetic, with some considering it the best dive watch under $400 due to its superior finishing and value. The case shape, dimensions, and drilled lugs are also highlighted as positives, and the dial is legible with good lume on the hands. However, reviewers and owners consistently flag sub-par lume on the markers that fades quickly, and an inconsistent power reserve. Some owners report the stock strap or bracelet is subpar, and one owner experienced the bezel detaching after a light bump, questioning build quality. Accuracy figures vary, with one owner noting it runs about 2.5 seconds fast per day, while another reports an inconsistent power reserve. On balance, owners rate the Glycine Combat Sub Box Ceramic highly for its thinness, unique design, and value, despite concerns about lume and strap quality.

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