Side by side

Seiko Prospex SPEEDTIMER MechanicalvsSpinnaker Fleuss 40 Automatic

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

Prospex SPEEDTIMER Mechanical
SeikoProspex SPEEDTIMER Mechanical
MSRP $995
Fleuss 40 Automatic
SpinnakerFleuss 40 Automatic
MSRP $450

At a glance

14 of 29 specs differ
Diameter
Prospex SPEEDTIMER Mechanical39.5mm
Fleuss 40 Automatic40mm
Power Reserve
Prospex SPEEDTIMER Mechanical72h
Fleuss 40 Automatic40h
Water Resistance
Prospex SPEEDTIMER Mechanical200m
Fleuss 40 Automatic150m
MSRP
Prospex SPEEDTIMER Mechanical$995
Fleuss 40 Automatic$450

Full specifications

Case

6 specs
Category
Chronograph
Diver
Diameter
39.5mm
40mm
Thickness
12mm
11mm
Lug-to-Lug
44.5mm
47mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
150m

Crystal & Dial

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

Movement

3 specs
Caliber
6R55
SII NH35A
Power Reserve
72h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$995
$450

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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.

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.

Spinnaker Fleuss 40 Automatic

Owners find the Spinnaker Fleuss 40 Automatic a good size for smaller wrists, though one owner notes the lume is too diffuse for easy nighttime reading. The pilot-style crown is an unusual feature for a dive watch. Overall, owners value the Spinnaker Fleuss 40 Automatic for its wearability on smaller wrists.

From video reviewers

The coral red dial is a unique aesthetic. The watch is a strong contender for best-in-class under $300.

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