Shown: reference RB12302A1L1P1 · Photo: Breitling
Breitling

Navitimer B12 Chronograph 41 Cosmonaute Reference RB12302A1L1P1

Navitimer B12 Chronograph 41 Cosmonaute Red Gold / Green

Overview

The Breitling Navitimer B12 Chronograph 41 Cosmonaute has a 41 mm rose gold case with a green dial. Inside is the self-winding Breitling calibre B12, which has a 70 hour power reserve. The watch is water resistant to 100 metres. One reference is listed, RB12302A1L1P1.

Breitling developed the Navitimer in 1952 for the Aircraft Owners and Pilots Association (AOPA). About the Breitling Navitimer

Case diameter
41 mm
13.6 mm thick
Movement
Calibre B12
Water resistance
100 m
Power reserve
Approx. 70 hrs

Specifications

Specifications from Breitling and WatchBase. Last checked . Sources

Case

Diameter
41 mm
Thickness
13.6 mm
Lug width
22 mm
Material
Rose gold
Crystal
Sapphire
Case back
Open
Water resistance
100 m
Weight
121.8 g
Crown
Non screw-locked, two gaskets
Bezel
Bidirectional, slide rule

Dial

Colour
Green

Movement

Type
Automatic
Power reserve
Approx. 70 hrs
Jewels
47
Frequency
28,800 vph (4 Hz)

Bracelet or strap

Bracelet or strap
Black alligator leather strap
Clasp
Folding clasp 18k red gold

Not yet recorded: lug-to-lug, shape, indexes, hands, functions, years.

Sources

Missing values are shown as not yet recorded, never estimated. How we source our data

MovementBreitling calibre B12Specifications and every watch that uses it

Navitimer B12 Chronograph 41 Cosmonaute questions

What size is the Breitling Navitimer B12 Chronograph 41 Cosmonaute?

The Breitling Navitimer B12 Chronograph 41 Cosmonaute has a 41 mm case.

What movement does the Breitling Navitimer B12 Chronograph 41 Cosmonaute use?

It uses the Breitling calibre B12.

What is the Breitling Navitimer B12 Chronograph 41 Cosmonaute case made of?

The case is rose gold.

Is the Breitling Navitimer B12 Chronograph 41 Cosmonaute water resistant?

It is rated to 100 m.

About the Breitling Navitimer

Breitling developed the Navitimer in 1952 for the Aircraft Owners and Pilots Association (AOPA). Its defining feature is a circular logarithmic slide rule on the rotating bezel, which lets pilots work out speed, distance, fuel consumption and other flight calculations. The name combines navigation and timer. In 1962 astronaut Scott Carpenter wore a Navitimer during his spaceflight. The current collection spans cases from 32mm to 46mm. Movements include Breitling's Manufacture Calibre 01 in the B01 chronographs, the manual-winding B09, the B19 perpetual calendar chronograph, and automatic time-only and GMT models.

Sources: Breitling: About Navitimer, Breitling: Navitimer icon page