Side by side

Bell & Ross BR 01 INSTRUMENT DE MARINEvsSpinnaker Dumas GMT

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

BR 01 INSTRUMENT DE MARINE
Bell & RossBR 01 INSTRUMENT DE MARINE
MSRP $8,532
Dumas GMT
SpinnakerDumas GMT
MSRP $399

At a glance

20 of 29 specs differ
Diameter
BR 01 INSTRUMENT DE MARINE46mm
Dumas GMT44mm
Power Reserve
BR 01 INSTRUMENT DE MARINE56 hoursh
Dumas GMT40h
Water Resistance
BR 01 INSTRUMENT DE MARINE100m
Dumas GMT300m
MSRP
BR 01 INSTRUMENT DE MARINE$8,532
Dumas GMT$399

Full specifications

Case

9 specs
Category
GMT
Diameter
46mm
44mm
Thickness
15mm
Lug-to-Lug
48mm
Lug Width
22mm
Material
Bronze
316L Stainless Steel
Finish
Brushed and polished
Water Resistance
100m
300m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Underside
Inner
Dial Color
White
Blue
Indices
Roman numerals
Applied

Movement

6 specs
Caliber
BR-CAL.203
Seiko NH34A
Type
Manual
Automatic
Beat Rate
28,800 vph
Power Reserve
56 hoursh
40h
Jewels
25
Complications
Hours/Minutes
None

Pricing

1 specs
MSRP
$8,532
$399

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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.

Bell & Ross BR 01 INSTRUMENT DE MARINE

The Bell & Ross BR 01 is recognized as a bold, 46mm "instrumentation watch" that drew inspiration from airplane cockpit altimeters upon its 2005 release. While one reviewer found a smaller variant in the line too flat and difficult to wear, the BR 01's unique design and historical significance are acknowledged. On balance, the Bell & Ross BR 01 is noted for its distinctive cockpit-inspired aesthetic and its impact on watch design at its launch.

Spinnaker Dumas GMT

Owners praise the Spinnaker Dumas GMT's satisfying lume, including on the crown, and good finishing, with one owner finding it wears well on a 17cm wrist. The watch features a Seiko NH34A GMT movement and a blue gradient dial. Reviewers note its 44mm diameter and 209g weight on the bracelet make it unsuitable for smaller wrists.

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