Side by side

Bremont Supermarine 300MvsChristopher Ward C63 Sealander 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 Sealander GMT
Christopher WardC63 Sealander GMT
MSRP $1,675

At a glance

16 of 29 specs differ
Diameter
Supermarine 300M40mm
C63 Sealander GMT42mm
Power Reserve
Supermarine 300M40h
C63 Sealander GMT56h
Water Resistance
Supermarine 300M300m
C63 Sealander GMT150m
MSRP
Supermarine 300M$3,550
C63 Sealander GMT$1,675

Full specifications

Case

9 specs
Category
Diver
GMT
Diameter
40mm
42mm
Thickness
12mm
11.5mm
Lug-to-Lug
48.5mm
Lug Width
20mm
22mm
Material
904L Stainless Steel
Stainless Steel
Finish
Brushed and polished
Brushed + Polished + Sandblasted
Water Resistance
300m
150m
Caseback
Solid
Display

Crystal & Dial

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

Movement

4 specs
Caliber
BE-92AE
SW330
Beat Rate
28,800 vph
4 vph
Power Reserve
40h
56h
Complications
None
GMT, Moonphase, Day-date

Pricing

1 specs
MSRP
$3,550
$1,675

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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 Sealander GMT

The Christopher Ward C63 Sealander GMT is praised for its comfortable wearability, with reviewers noting its slim profile, short lugs, and 39mm case size, while others prefer the proportions of the 36mm version. The watch features a Light-catcher case with alternating brushed and polished surfaces, and the Bader bracelet is highlighted for its build quality and comfort at its price point. Some owners find the gloss white dial's text and indices small, and the orange accents can appear yellow. The Sellita SW330-2 movement provides caller GMT functionality and a 56-hour power reserve. On balance, owners and reviewers appreciate the Christopher Ward C63 Sealander GMT for its comfortable wearability and solid bracelet construction at its price.

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