Seiko Prospex SPEEDTIMER MechanicalvsWilliam Wood Triumph 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.

Seiko Prospex SPEEDTIMER Mechanical at true scale

Prospex SPEEDTIMER Mechanical

William Wood Triumph Chronograph at true scale

Triumph Chronograph

Diameter

39.5mm

41mm

Lug-to-Lug

44.5mm

lowest

49.5mm

Thickness

12mm

lowest

16mm

Water Resistance

200m

highest

100m

Power Reserve

72h

n/a

MSRP

$995

lowest

$2,525

Movement

Seiko 6R55

Sellita SW510

Case

5 specs
Diameter
39.5mm
41mm
Thickness
12mm
16mm
Lug-to-Lug
44.5mm
49.5mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
100m

Crystal & Dial

4 specs
Crystal Shape
Curved
n/a
AR Coating
Anti-reflective coating on inner surface
n/a
Dial Color
n/a
Steel
Lume
LumiBrite on hands and index(es)
None

Movement

3 specs
Caliber
Seiko 6R55
Sellita SW510
Power Reserve
72h
0h
Jewels
24
0

Pricing

1 specs
MSRP
$995
$2,525
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Reviews

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

Seiko Prospex SPEEDTIMER Mechanical

The Seiko Prospex SPEEDTIMER Mechanical is widely praised for its comfortable 39.5mm case size and appealing matte silver-white dial with LumiBrite indices. Owners find the watch visually attractive and comfortable for daily wear, with the 72-hour power reserve of the 6R55 automatic movement noted as a strength. Some users appreciate the chronograph function for everyday tasks, while others acknowledge it is rarely used by most purchasers. The watch features a countdown bezel and 20 bar water resistance. On balance, owners and reviewers rate the Seiko Prospex SPEEDTIMER Mechanical highly for its wearability and practical power reserve.

William Wood Triumph Chronograph

The William Wood Triumph Chronograph is a Swiss-made chronograph featuring a 41mm stainless steel case and a Sellita SW510 movement. Reviewers highlight its firefighting-inspired design, including a sandwich dial, unique sub-dials, and upcycled fire hose straps. The watch has a 48-hour power reserve, though the movement is often credited with up to 56 hours. Its 16.5mm height and 49.5mm lug-to-lug measurement mean it wears large on a 7-inch wrist, and the handset is described as flat and blocky. Overall, reviewers appreciate the novel design elements and thematic execution of the William Wood Triumph Chronograph.

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