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Breitling Navitimer B02 Chronograph 41 CosmonautevsZenith Chronomaster Open

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

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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.

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.

Zenith Chronomaster Open

The open dial showcasing the El Primero movement is cited as a key feature. Reviewers did not reach a consensus on any weaknesses.

At a glance

15 of 29 specs differ
Diameter
Navitimer B02 Chronograph 41 Cosmonaute41mm
Chronomaster Open39.5mm
Power Reserve
Navitimer B02 Chronograph 41 Cosmonaute70h
Chronomaster Open60h
Water Resistance
Navitimer B02 Chronograph 41 Cosmonaute30m
Chronomaster Open50m
MSRP
Navitimer B02 Chronograph 41 Cosmonaute$12,650
Chronomaster Open$11,100

Full specifications

Case

7 specs
Diameter
41mm
39.5mm
Thickness
13mm
0mm
Lug Width
22mm
0mm
Material
Stainless steel & platinum
Stainless Steel
Finish
Stainless steel & platinum
Water Resistance
30m
50m
Caseback
Display

Crystal & Dial

1 specs
Dial Color
Anthracite
Silver

Movement

6 specs
Caliber
Breitling B02
Zenith El Primero 3604
Type
Manual
Automatic
Beat Rate
0 vph
36,000 vph
Power Reserve
70h
60h
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$12,650
$11,100
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