Side by side

Bremont Supermarine 300MvsChristopher Ward C63 True GMT

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
C63 True GMT
Christopher WardC63 True GMT
MSRP $4,135

At a glance

16 of 29 specs differ
Diameter
Supermarine 300M40mm
C63 True GMT48mm
Power Reserve
Supermarine 300M40h
C63 True GMT120h
Water Resistance
Supermarine 300M300m
C63 True GMT100m
MSRP
Supermarine 300M$3,550
C63 True GMT$4,135

Full specifications

Case

8 specs
Category
Diver
GMT
Diameter
40mm
48mm
Thickness
12mm
14.15mm
Lug-to-Lug
48mm
Lug Width
20mm
22mm
Material
904L Stainless Steel
Stainless Steel
Finish
Brushed and polished
Brushed + Polished + Sandblasted
Water Resistance
300m
100m

Crystal & Dial

2 specs
Dial Color
Green
Black
Lume
None
SLN X1 BL C1

Movement

5 specs
Caliber
BE-92AE
CW-002
Beat Rate
28,800 vph
4 vph
Power Reserve
40h
120h
Jewels
25
33
Complications
None
GMT, Moonphase, Day-date, Small seconds

Pricing

1 specs
MSRP
$3,550
$4,135

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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.

Christopher Ward C63 True GMT

The Christopher Ward C63 True GMT is widely praised for its in-house CW-002 caliber, which offers a 120-hour power reserve and COSC certification. Owners find the 39mm case size comfortable, though some note it wears closer to 40-41mm. While the PVD hands provide good contrast and the lume is praised for readability, one owner felt the orange accent lacked pop and the gloss dial/text combo appeared cheap in certain lighting. One owner also noted a perceived slight difference in production quality compared to a sibling model's bracelet. Overall, owners and reviewers rate the Christopher Ward C63 True GMT highly for its impressive power reserve and COSC-certified movement at its price point.

From video reviewers

The case finishing is praised for its polished and curved surfaces. The watch uses a Sellita SW330-2 movement. Reviewers disagree on the case size, with one noting 40.5mm and another highlighting a 36mm option.

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