Breitling Top Time B01 RacingvsNivada Grenchen Chronomaster 38mm Automatic 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 Racing at true scale

Top Time B01 Racing

Nivada Grenchen Chronomaster 38mm Automatic Chronograph at true scale

Chronomaster 38mm Automatic Chronograph

Diameter

38mm

38mm

Lug-to-Lug

n/a

48.5mm

Thickness

13.1mm

lowest

15.8mm

Water Resistance

100m

100m

Power Reserve

70h

n/a

MSRP

$8,050

$2,395

lowest

Movement

Breitling B01

Automatic

Case

5 specs
Thickness
13.07mm
15.85mm
Lug-to-Lug
n/a
48.5mm
Lug Width
n/a
20mm
Finish
Stainless steel
Brushed + Polished
Caseback
n/a
316L Stainless Steel

Crystal & Dial

2 specs
Dial Color
n/a
White
Lume
None
x1

Movement

7 specs
Caliber
Breitling B01
n/a
Beat Rate
0 vph
4 vph
Power Reserve
70h
0h
Jewels
34
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
GMT, Chronograph, Small seconds

Pricing

1 specs
MSRP
$8,050
$2,395
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Reviews

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

Breitling Top Time B01 Racing

The Breitling Top Time B01 Racing is widely praised for its compact 38mm cushion case and excellent wearability, echoing the brand's 1960s designs. Owners appreciate the in-house B01 automatic movement and the dashboard-inspired dials, with one noting the blue dial's color-shifting properties. The watch features 100m water resistance and a 70-hour power reserve. Some reviewers suggest more brushed finishing on the case, as it currently has abundant polishing. Opinions on fit vary, with one owner recommending an in-person try-on due to wrist shape differences. Overall, owners rate the Breitling Top Time B01 Racing highly for its compact, retro-inspired design and in-house movement.

From video reviewers

The in-house B01 movement and 100m water resistance are strong features. The price point of $8,050 is considered expensive compared to alternatives. Reviewers disagreed on the value proposition at this price.

Nivada Grenchen Chronomaster 38mm Automatic Chronograph

Owners widely praise the Nivada Grenchen Chronomaster 38mm Automatic Chronograph for its perfect 38mm size and comfortable, vintage-inspired case design with downward-angling lugs. Reviewers highlight its faithful reissue quality, legible dial with tachymeter, and unique "baked" tropical dial that mimics patina without vintage fragility. One owner regrets the automatic caseback causes the watch to sit high on the wrist, while another found the construction felt light and poorly made. The 100m water resistance is noted as a slight limitation for a chronograph. Overall, owners and reviewers rate the Nivada Grenchen Chronomaster 38mm Automatic Chronograph highly for its excellent vintage-inspired design and wearability at 38mm.