Side by side

Bremont Supermarine 300MvsCWC GS Sapphire Military Green Watch

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
GS Sapphire Military Green Watch
CWCGS Sapphire Military Green Watch
MSRP $333

At a glance

11 of 29 specs differ
Diameter
Supermarine 300M40mm
GS Sapphire Military Green Watch36.5mm
Power Reserve
Supermarine 300M40h
GS Sapphire Military Green Watch40h
Water Resistance
Supermarine 300M300m
GS Sapphire Military Green Watch200m
MSRP
Supermarine 300M$3,550
GS Sapphire Military Green Watch$333

Full specifications

Case

6 specs
Category
Diver
Field
Diameter
40mm
36.5mm
Lug-to-Lug
46mm
Lug Width
20mm
19mm
Material
904L Stainless Steel
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Dial Color
Green
CWC GS Sapphire Military Green Watch, Black Case with Green Dial
Lume
None
Super-LumiNova

Movement

1 specs
Caliber
BE-92AE

Pricing

1 specs
MSRP
$3,550
$333

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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.

CWC GS Sapphire Military Green Watch

Owners widely praise the CWC GS Sapphire Military Green Watch for its grab-and-go quartz accuracy, sapphire crystal, screw-down crown and case back, and 200m water resistance, a unique combination for a field watch. The 36.5mm case is noted for its subtle size and solid build quality, fitting well with the brand's military heritage and functional, attractive simplicity. Some owners find the watch pricey, particularly with recent tariff and exchange rate increases, and fixed lugs can present a challenge for thicker straps. Overall, owners rate the CWC GS Sapphire Military Green Watch highly for its robust, practical field watch design and reliable quartz movement.

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