Side by side

Breitling Navitimer B02 Chronograph 41 CosmonautevsBremont ALT1-C

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

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Breitling Navitimer B02 Chronograph 41 Cosmonaute

Owners widely praise the Breitling Navitimer B02 Chronograph 41 Cosmonaute for its striking 24-hour dial, historical significance, and overall craftsmanship, with some calling it the best-looking Navitimer. The manual-wind B02 movement, hand-wound and engraved with mission details in some variants, contributes to a comfortable 41mm case size and 13mm thickness. Reviewers note the 24-hour display was "extremely helpful" for tracking mission elapsed time, and specific limited editions feature unique elements like blue meteorite dials or platinum bezels. However, some owners find the 24-hour dial busy and difficult to read at a glance, and one owner reported a chipped lume on the minute hand requiring service. Overall, owners and reviewers rate the Breitling Navitimer B02 Chronograph 41 Cosmonaute highly for its unique aesthetic and historical connection to space travel.

From video reviewers

The hand-wound Manufacture Caliber B02 delivers impressive 70-hour power reserve and precise timekeeping in a limited 450-piece release. The 24-hour dial effectively honors the Cosmonaute's space heritage while the platinum bezel adds distinctive design character. However, 30-meter water resistance and a non-screw-down crown are significant limitations at the $11,900 price point.

Bremont ALT1-C

Owners widely praise the Bremont ALT1-C for its flawless brushed case finish, attractive cream dial with excellent contrast from anthracite sub-dials, and comfortable, balanced wearability. The watch features a well-finished strap and a movement that is a joy to wind, with precise chronograph operation. Reviewers note refined feuille hands and polished Arabic numerals with a golden tinge, balancing ruggedness with elegance. The Bremont ALT1-C averages +3 seconds per day, though one reviewer flags its 16mm height as less than ideal for under-cuff wear and describes the date window as narrow. The modified Valjoux 7750 movement's rotor spin is noticeable. Overall, owners rate the Bremont ALT1-C highly for its refined aesthetics and enjoyable user experience.

At a glance

18 of 29 specs differ
Diameter
Navitimer B02 Chronograph 41 Cosmonaute41mm
ALT1-C43mm
Power Reserve
Navitimer B02 Chronograph 41 Cosmonaute70h
ALT1-C40h
Water Resistance
Navitimer B02 Chronograph 41 Cosmonaute30m
ALT1-C100m
MSRP
Navitimer B02 Chronograph 41 Cosmonaute$12,650
ALT1-C$6,150

Full specifications

Case

7 specs
Diameter
41mm
43mm
Thickness
13mm
16mm
Lug-to-Lug
46mm
Material
Stainless steel & platinum
316L Stainless Steel
Finish
Stainless steel & platinum
Brushed and polished
Water Resistance
30m
100m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Anthracite
Regular length (15cm - 19cm wrist size)
Indices
Applied

Movement

6 specs
Caliber
Breitling B02 (Manufacture)
BE-50AE
Type
Manual
Automatic
Beat Rate
0 vph
28,800 vph
Power Reserve
70h
40h
Jewels
0
25
Complications
Chronograph
None

Pricing

1 specs
MSRP
$12,650
$6,150
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