Breitling Top Time B01vsBremont Supermarine Chrono

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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.

Breitling Top Time B01 at true scale

Top Time B01

Bremont Supermarine Chrono at true scale

Supermarine Chrono

Diameter

41mm

43mm

Thickness

13.3mm

lowest

15.9mm

Water Resistance

100m

300m

highest

Power Reserve

70h

n/a

MSRP

$7,650

$6,850

lowest

Movement

Breitling B01

Bremont BE-50AE

Case

6 specs
Diameter
41mm
43mm
Thickness
13.3mm
15.87mm
Lug Width
n/a
22mm
Material
Stainless Steel
Stainless Steel (DLC coated)
Finish
18k red gold
n/a
Water Resistance
100m
300m

Crystal & Dial

1 specs
Dial Color
n/a
Black

Movement

4 specs
Caliber
Breitling B01
Bremont BE-50AE
Power Reserve
70h
0h
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$7,650
$6,850
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Breitling Top Time B01

Owners widely praise the Breitling Top Time B01 for its handsome design and sharp finishing, with some calling it one of their favorite watches and sexier than alternatives. Reviewers note the in-house B01 movement, 41mm case that wears smaller than dimensions suggest, and 100m water resistance. Owners appreciate the blue dial that changes with light and unique details like a lightning bolt seconds hand or dials made from automotive paint chips. One owner notes the lug-to-lug length can be a concern for smaller wrists, suggesting an in-person try-on. Accuracy figures vary, with one owner seeing +1/+2 seconds per day and another about -6 seconds per day. The Breitling Top Time B01 offers a 70-hour power reserve and a 5-year warranty. On balance, owners and reviewers rate the Breitling Top Time B01 highly for its attractive design and the value of its in-house B01 movement.

From video reviewers

The in-house B01 chronograph movement with its 70-hour power reserve stands out as the defining strength, delivering substantial functionality and reliability across multiple variants. The compact proportions—ranging from 38mm to 41mm cases with lug-to-lug measurements between 44mm and 50mm—ensure comfortable wearability across different wrist sizes. Reviewer assessments diverged sharply on value, with one calling the £5,950 price point excellent value for the specifications, while others provided no pricing commentary.

Bremont Supermarine Chrono

Owners widely praise the Bremont Supermarine Chrono for its COSC-certified automatic movement running at an impressive +0.5 seconds per day and its hardened case with amazing finishing. The 43mm case is considered large, but its dial pattern and understated bezel markings allow it to transition effectively from rugged use to evening events, offering excellent legibility. The chronograph pushers are described as larger than average but well-balanced with the crown. One owner reported better timekeeping after a warranty service, highlighting positive customer service. On balance, owners and reviewers rate the Bremont Supermarine Chrono highly for its excellent timekeeping and impressive case finishing at its price point.