Side by side

Seiko Prospex SPEEDTIMER MechanicalvsSpinnaker Croft Mid-Size Skeleton

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

Prospex SPEEDTIMER Mechanical
SeikoProspex SPEEDTIMER Mechanical
MSRP $995
Croft Mid-Size Skeleton
SpinnakerCroft Mid-Size Skeleton
MSRP $425
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 Croft Mid-Size Skeleton

The Spinnaker Croft Mid-Size Skeleton is noted for its 40mm steel case, sapphire crystal, and 150m water resistance. One owner reports strong performance from the TMI NH70 movement at -3 seconds per day, with very nice lume. On balance, owners find the Spinnaker Croft Mid-Size Skeleton to be a pretty nice option, particularly for its movement performance and lume.

At a glance

14 of 29 specs differ
Diameter
Prospex SPEEDTIMER Mechanical39.5mm
Croft Mid-Size Skeleton40mm
Power Reserve
Prospex SPEEDTIMER Mechanical72h
Croft Mid-Size Skeleton40h
Water Resistance
Prospex SPEEDTIMER Mechanical200m
Croft Mid-Size Skeleton100m
MSRP
Prospex SPEEDTIMER Mechanical$995
Croft Mid-Size Skeleton$425

Full specifications

Case

6 specs
Category
Chronograph
Field
Diameter
39.5mm
40mm
Thickness
12mm
14mm
Lug-to-Lug
44.5mm
47mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
100m

Crystal & Dial

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

Movement

3 specs
Caliber
6R55
SII NH38A
Power Reserve
72h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$995
$425
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