Side by side

Bremont Supermarine 300MvsChristopher Ward C1 Jump Hour Mk V

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550
C1 Jump Hour Mk V
Christopher WardC1 Jump Hour Mk V
MSRP $3,095

At a glance

12 of 29 specs differ
Diameter
Supermarine 300M40mm
C1 Jump Hour Mk V40mm
Power Reserve
Supermarine 300M40h
C1 Jump Hour Mk V41h
Water Resistance
Supermarine 300M300m
C1 Jump Hour Mk V30m
MSRP
Supermarine 300M$3,550
C1 Jump Hour Mk V$3,095

Full specifications

Case

5 specs
Category
Diver
Thickness
12mm
14mm
Lug-to-Lug
47.3mm
Material
904L Stainless Steel
316L Stainless Steel
Water Resistance
300m
30m

Crystal & Dial

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

Movement

4 specs
Caliber
BE-92AE
SW200-1
Beat Rate
28,800 vph
4 vph
Power Reserve
40h
41h
Jewels
25
26

Pricing

1 specs
MSRP
$3,550
$3,095

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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 C1 Jump Hour Mk V

The Christopher Ward C1 Jump Hour Mk V is praised for its proprietary JJ01 jumping hour complication and multi-level dial design featuring a floating sapphire dial with a lumed jump hour aperture. Reviewers note the 39mm stainless steel case's mix of brushed and polished finishes, with a polished bezel and brushed midcase. The dial's radially grooved center and sapphire minute track with a lumed underside enhance legibility, and the Super-LumiNova execution is described as an eye-catcher. The watch is powered by the JJ01 module atop a Sellita SW200-1 movement, offering a 38-hour power reserve. Accuracy is rated at approximately ±20 seconds per day. Some owners express concerns about the watch's 14mm thickness. Overall, owners and reviewers appreciate the unique dial execution and complication at its price point.

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