Side by side

Breitling Premier B01 Chronograph 42vsSeiko Prospex SPEEDTIMER

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

What people say

Owners + reviewers, side by side

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

Breitling Premier B01 Chronograph 42

Owners widely praise the Breitling Premier B01 Chronograph 42 for its timeless and elegant design, exceptional finishing, and high-quality feel, with many noting the stunning sunburst dials and applied Arabic numerals add historical character. Reviewers highlight the versatile design, thoughtful proportions, and the impressive in-house B01 movement as significant value propositions. Owners report a slim and comfortable wear, often feeling smaller than its 42mm case size, and appreciate the case design for fitting a variety of wrists. Some owners find the chronograph pusher stiff when starting and the reset arm requires extra effort, while one owner notes timekeeping accuracy around five seconds fast per day. The lume is considered lackluster by one owner due to small application areas, and some find the tachymeter scale visually distracting.

Seiko Prospex SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER's design, with specific mentions of its beautiful ice blue sundial and compact 39mm case size, which some note wears smaller than its specifications due to a short lug-to-lug distance. Reviewers highlight its racing-inspired aesthetic and versatility, with one owner finding the 39mm solar model a sturdy and reliable everyday watch with 100m water resistance. However, some owners question the value proposition, citing the $700 price for a solar quartz model and a thickness of 13mm, while others expressed a preference for automatic movements. On balance, owners and reviewers appreciate the Seiko Prospex SPEEDTIMER's attractive vintage-inspired design and compact wearability, though some debate its value and thickness for a solar quartz chronograph.

At a glance

19 of 29 specs differ
Diameter
Premier B01 Chronograph 4242mm
Prospex SPEEDTIMER41.4mm
Power Reserve
Premier B01 Chronograph 4270h
Prospex SPEEDTIMER40h
Water Resistance
Premier B01 Chronograph 42100m
Prospex SPEEDTIMER100m
MSRP
Premier B01 Chronograph 42$22,900
Prospex SPEEDTIMER$750

Full specifications

Case

7 specs
Diameter
42mm
41.4mm
Thickness
13.6mm
13mm
Lug-to-Lug
45.9mm
Lug Width
20mm
21mm
Material
18kt Pink Gold
Stainless Steel
Finish
Stainless steel
Brushed and polished
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Curved
AR Coating
Anti-reflective coating on inner surface
Dial Color
Black
Indices
Applied
Lume
None
LumiBrite on hands and index(es)

Movement

6 specs
Caliber
Breitling B01
V192
Type
Automatic
Quartz
Beat Rate
0 vph
28,800 vph
Power Reserve
70h
40h
Jewels
0
25
Complications
Chronograph
None

Pricing

1 specs
MSRP
$22,900
$750
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