Breitling Top Time B01vsBremont Terra Nova 42.5 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.

Breitling Top Time B01 at true scale

Top Time B01

Bremont Terra Nova 42.5 Chronograph at true scale

Terra Nova 42.5 Chronograph

Diameter

41mm

42.5mm

Thickness

13.3mm

lowest

14.8mm

Water Resistance

100m

100m

Power Reserve

70h

n/a

MSRP

$7,650

$4,950

lowest

Movement

Breitling B01

Bremont ENG345

Case

5 specs
Diameter
41mm
42.5mm
Thickness
13.3mm
14.8mm
Lug Width
n/a
14.8mm
Material
Stainless Steel
316L Stainless Steel
Finish
18k red gold
n/a

Crystal & Dial

1 specs
Dial Color
n/a
Black

Movement

4 specs
Caliber
Breitling B01
Bremont ENG345
Power Reserve
70h
0h
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$7,650
$4,950
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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 Terra Nova 42.5 Chronograph

Owners report the DLC coating on the Bremont Terra Nova 42.5 Chronograph is durable, though one noted a ding on the barrel. The chronograph hand resets slightly off-center for one owner. Reviewers describe the 42.5mm case as blocky with satin finishing and minimal polishing, noting its 48.8mm lug-to-lug and 14.8mm thickness felt bulky on leather but improved with elastic or rubber straps. The winding action is satisfying, and the chronograph pushers are crisp, though the start/stop pusher requires significant force. The Cupro-Aluminium case is expected to patina over time, and the watch features a bi-directional bronze compass bezel with a black ceramic insert and a green gradient dial with full-block Super-LumiNova numerals. The rear sapphire caseback on a prototype was too dark to appreciate the movement, and text around a tourbillon window detracted from the dial.