Side by side

Bremont Williams RacingvsSeiko Prospex SPEEDTIMER Mechanical Chronograph

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

Williams Racing
BremontWilliams Racing
MSRP $7,000

At a glance

14 of 29 specs differ
Diameter
Williams Racing43mm
Prospex SPEEDTIMER Mechanical Chronograph42mm
Power Reserve
Williams Racing40h
Prospex SPEEDTIMER Mechanical Chronograph45h
Water Resistance
Williams Racing
Prospex SPEEDTIMER Mechanical Chronograph100m
MSRP
Williams Racing$7,000
Prospex SPEEDTIMER Mechanical Chronograph$2,500

Full specifications

Case

6 specs
Diameter
43mm
42mm
Thickness
15.8mm
14.6mm
Lug-to-Lug
49.5mm
Lug Width
22mm
20mm
Material
Titanium
Stainless Steel
Water Resistance
100m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Brown
Black
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
8R48
Power Reserve
40h
45h
Jewels
25
34

Pricing

1 specs
MSRP
$7,000
$2,500

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What people say

Owners + reviewers, side by side

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

Bremont Williams Racing

The Bremont Williams Racing features a panda dial with blue accents and a tachymeter bezel, housed in a 43mm TripTick case. It is powered by a chronometer-rated BE-53AE automatic movement with a 42-hour power reserve and a custom rotor. While the 15.8mm height is considered reasonable for a chronograph, the 43mm case size may require trying it on for those preferring smaller watches. Overall, reviewers highlight the motorsport-inspired design and robust build of the Bremont Williams Racing.

Seiko Prospex SPEEDTIMER Mechanical Chronograph

The Seiko Prospex SPEEDTIMER Mechanical Chronograph is praised for its handsome, heritage-inspired design with a clean, balanced dial and an external tachymeter bezel. Reviewers highlight the upgraded case and bracelet, noting improved comfort and good value for a well-designed chronograph with an in-house movement. The caliber 8R48 movement features a vertical clutch and column wheel with MEMS technology for durability and precision. Points to consider include the 4:30 date window and a 14.6mm thickness, while the 45-hour power reserve is noted as an area for potential improvement. On balance, reviewers find the Seiko Prospex SPEEDTIMER Mechanical Chronograph to be a solid offering with good value, particularly for its design and in-house movement.

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