Breitling Premier B09 Chronograph 40vsDumoreau Monopusher Chronograph

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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 B09 Chronograph 40

Monopusher Chronograph
Diameter
40mm
40mm
Lug-to-Lug
n/a
46mm
Thickness
13.1mm
12.5mm
lowest
Water Resistance
100m
100m
Power Reserve
70h
highest
63h
MSRP
$23,900
n/a
Movement
Breitling B09
Sellita SW510
Case
5 specsCrystal & Dial
1 specsMovement
5 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners and reviewers widely praise the Breitling Premier B09 Chronograph 40 for its classically styled, in-house manual wind chronograph design, with many highlighting the bold pistachio green dial and the watch's overall classy and extremely well-finished appearance. Some owners admire the applied Arabic numerals and Super-LumiNova hands on the legible two-register dial, though a minority dislike the "cut off numbers." The 40mm case size and 100m water resistance are noted as modern touches on this retro piece, powered by the manual-wind Breitling B09 movement. Overall, owners and reviewers rate the Breitling Premier B09 Chronograph 40 highly for its unique design and excellent finishing at its price point.
Owners widely praise the Dumoreau Monopusher Chronograph for its thinness and attractive finishing on the manual-wind Sellita SW510 movement, with the blue dial variant noted as a limited edition feature. One owner finds the £1,250 price tag too high, seeking alternatives in a lower price bracket. Overall, owners appreciate the Dumoreau Monopusher Chronograph's refined finishing and wearability, though some question its value proposition at the current price point.
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