Side by side

Bell & Ross BR 01 INSTRUMENT DE MARINEvsBremont Altitude Perpetual Calendar 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
Altitude Perpetual Calendar GMT
BremontAltitude Perpetual Calendar GMT
MSRP $38,450

At a glance

19 of 29 specs differ
Diameter
BR 01 INSTRUMENT DE MARINE46mm
Altitude Perpetual Calendar GMT42mm
Power Reserve
BR 01 INSTRUMENT DE MARINE56 hoursh
Altitude Perpetual Calendar GMT40h
Water Resistance
BR 01 INSTRUMENT DE MARINE100m
Altitude Perpetual Calendar GMT
MSRP
BR 01 INSTRUMENT DE MARINE$8,532
Altitude Perpetual Calendar GMT$38,450

Full specifications

Case

8 specs
Category
GMT
Diameter
46mm
42mm
Thickness
12.65mm
Lug Width
22mm
Material
Bronze
Titanium
Finish
Brushed and polished
Water Resistance
100m
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
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
$38,450

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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.

Bremont Altitude Perpetual Calendar GMT

The Bremont Altitude Perpetual Calendar GMT is a highly exclusive piece, with one owner noting its $44,000 price point raises questions about its target audience and suggesting it may be a limited production showpiece. Reviewers highlight its refined Trip-Tick case, now featuring softer curves, a 42mm diameter, and a 12.23mm thickness in grade 2 titanium, though the oversized crowns are flagged as a potential drawback. Overall, owners and reviewers acknowledge the Bremont Altitude Perpetual Calendar GMT as a distinctive, albeit niche, high-complication offering with a notable case refinement.

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