Side by side

Breitling Super Avi B04 Chronograph GMT 46 P 51 MustangvsSeiko Prospex SPEEDTIMER Mechanical

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 Super Avi B04 Chronograph GMT 46 P 51 Mustang

The Breitling Super Avi B04 Chronograph GMT 46 P 51 Mustang is praised for its vintage aviation aesthetic, legible dial, and in-house B04 GMT movement. Owners appreciate its unique, bold design that stands out, with some finding it wears smaller than its 46mm case suggests. Reviewers note the crisp look, sharp polished bezel, and brushed case finishing. However, the watch's substantial 46mm size and thickness are widely considered too large for smaller wrists, though some find it surprisingly comfortable. The price is also noted as high, with some questioning the value unless the GMT complication is essential. The inclusion of a date function is seen by some as a departure from historical references. Overall, owners and reviewers rate the Breitling Super Avi B04 Chronograph GMT 46 P 51 Mustang highly for its successful blend of aviation heritage and modern watchmaking, despite its considerable size.

Seiko Prospex SPEEDTIMER Mechanical

The Seiko Prospex SPEEDTIMER Mechanical is praised for its visually appealing design and comfortable wearability, with owners frequently using its chronograph function for daily tasks. Reviewers note its clean dial layout and LumiBrite treated hands and markers, and one source highlights the 72-hour power reserve of the 6R55 movement. However, some owners criticize its chronograph functionality and the 24-hour subdial. On balance, owners and reviewers rate the Seiko Prospex SPEEDTIMER Mechanical highly for its daily usability and refined aesthetics.

At a glance

18 of 29 specs differ
Diameter
Super Avi B04 Chronograph GMT 46 P 51 Mustang46mm
Prospex SPEEDTIMER Mechanical39.5mm
Power Reserve
Super Avi B04 Chronograph GMT 46 P 51 Mustang70h
Prospex SPEEDTIMER Mechanical72h
Water Resistance
Super Avi B04 Chronograph GMT 46 P 51 Mustang100m
Prospex SPEEDTIMER Mechanical200m
MSRP
Super Avi B04 Chronograph GMT 46 P 51 Mustang$30,900
Prospex SPEEDTIMER Mechanical$995

Full specifications

Case

7 specs
Diameter
46mm
39.5mm
Thickness
15.9mm
12mm
Lug-to-Lug
44.5mm
Material
18kt Pink Gold
Stainless Steel
Finish
Stainless steel
Brushed and polished
Water Resistance
100m
200m
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

5 specs
Caliber
Breitling B04 (Manufacture)
6R55
Beat Rate
0 vph
28,800 vph
Power Reserve
70h
72h
Jewels
0
24
Complications
Chronograph, GMT
None

Pricing

1 specs
MSRP
$30,900
$995
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Follow this matchup

Get a note when Breitling Super Avi B04 Chronograph GMT 46 P 51 Mustang vs Seiko Prospex SPEEDTIMER Mechanical gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.