Breitling Premier B21 Chronograph Tourbillon 42 Willy BreitlingvsRolex Cosmograph Daytona

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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Premier B21 Chronograph Tourbillon 42 Willy Breitling

Cosmograph Daytona
Diameter
42mm
40mm
Thickness
15.3mm
n/a
Water Resistance
100m
100m
Power Reserve
55h
72h
highest
MSRP
$85,300
$42,700
lowest
Movement
Breitling B21
4131
Case
6 specsCrystal & Dial
4 specsMovement
5 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Breitling Premier B21 Chronograph Tourbillon 42 Willy Breitling's crisp and gorgeous dial, with some calling it one of Breitling's best pieces. The Breitling B21 movement is reported by one owner to be exceptionally good, maintaining accuracy even when idle. Reviewers note the classic design, short lugs, and comfortable lug span, with white gold numerals looking superb on the stepped dial. One owner prefers its aesthetics over the B01, though the B01 is noted as technically superior. The Breitling Premier B21 Chronograph Tourbillon 42 Willy Breitling has a 55-hour power reserve. Overall, owners and reviewers rate the Breitling Premier B21 Chronograph Tourbillon 42 Willy Breitling highly for its stunning dial and classic design.
Owners widely report the Rolex Cosmograph Daytona offers remarkable comfort and wearability, with some praising its perfect proportions and sleeker feel, while others find the 40mm case size and bracelet exceptionally comfortable. Reviewers note a tweaked dial for improved legibility and a new ceramic bezel with a steel ring on recent references. However, opinions are split on its value, with some finding it overpriced relative to its market value and others appreciating its versatility. Some owners criticize the sub-dial placement and screw-down pushers, while others praise its superior accuracy and automatic movement. Overall, owners and reviewers rate the Rolex Cosmograph Daytona highly for its comfort and wrist presence, despite ongoing debate about its value proposition.
The 18k yellow gold case and Cerachrom bezel are frequently cited strengths. The Oysterflex bracelet also received multiple mentions.
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