Side by side

Breitling Premier B09 Chronograph 40vsRolex Cosmograph Daytona

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 Premier B09 Chronograph 40

Owners and reviewers widely praise the Breitling Premier B09 Chronograph 40 for its classically styled, in-house manual wind chronograph design and excellent finishing. The 40mm size, legible two-register dial, and applied Arabic numerals are highlighted as modern touches on a retro piece, with the pistachio green dial variant receiving particular admiration for its bold and fresh aesthetic. Some owners, however, dislike the "cut off numbers" on the dial, though others appreciate them. Overall, owners and reviewers rate the Breitling Premier B09 Chronograph 40 highly for its tasteful design and strong build quality.

Rolex Cosmograph Daytona

Owners widely praise the Rolex Cosmograph Daytona for its exceptional proportions and comfort on the wrist, with many finding its 40mm case and bracelet to be perfectly balanced and wearable. Reviewers note a tweaked dial for improved legibility and a new ceramic bezel with a steel ring on the ref. 126500. However, some owners find the watch underwhelming in person and criticize the sub-dial placement, screw-down pushers, and high market value, with one reviewer finding the retail price steep compared to other iconic chronographs. Accuracy figures vary, with some owners reporting superior accuracy and others noting a range from +1/+2 to about -6 seconds per day. On balance, owners and reviewers rate the Rolex Cosmograph Daytona highly for its wearability and refined finishing, despite some reservations about its value proposition.

From video reviewers

The 18k yellow gold case and Cerachrom bezel are frequently cited strengths. The Oysterflex bracelet also received multiple mentions.

At a glance

15 of 29 specs differ
Diameter
Premier B09 Chronograph 4040mm
Cosmograph Daytona40mm
Power Reserve
Premier B09 Chronograph 4070h
Cosmograph Daytona72h
Water Resistance
Premier B09 Chronograph 40100m
Cosmograph Daytona100m
MSRP
Premier B09 Chronograph 40$23,900
Cosmograph Daytona$16,900

Full specifications

Case

5 specs
Thickness
13.08mm
Lug Width
0mm
Material
18kt Pink Gold
Oystersteel
Finish
Stainless steel
18 kt yellow gold
Caseback
Monobloc middle case, screw-down case back and winding crown

Crystal & Dial

4 specs
Crystal Shape
Flat
Dial Color
Turquoise
Indices
Index
Lume
None
Chromalight

Movement

5 specs
Caliber
Breitling B09 (Manufacture)
4131
Type
Manual
Automatic
Beat Rate
0 vph
28,800 vph
Power Reserve
70h
72h
Jewels
0
47

Pricing

1 specs
MSRP
$23,900
$16,900
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