Side by side

Seiko King Seiko KSKvsSpinnaker Croft Mid-Size Skeleton

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

King Seiko KSK
SeikoKing Seiko KSK
MSRP $1,900
Croft Mid-Size Skeleton
SpinnakerCroft Mid-Size Skeleton
MSRP $425

At a glance

14 of 29 specs differ
Diameter
King Seiko KSK36.1mm
Croft Mid-Size Skeleton40mm
Power Reserve
King Seiko KSK72h
Croft Mid-Size Skeleton40h
Water Resistance
King Seiko KSK100m
Croft Mid-Size Skeleton100m
MSRP
King Seiko KSK$1,900
Croft Mid-Size Skeleton$425

Full specifications

Case

6 specs
Category
Dress
Field
Diameter
36.1mm
40mm
Thickness
11.6mm
14mm
Lug-to-Lug
43mm
47mm
Lug Width
19mm
20mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

4 specs
Crystal Shape
Box
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
6R51
SII NH38A
Power Reserve
72h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$1,900
$425

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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 King Seiko KSK

The King Seiko KSK is widely praised for its refined finishing, with owners and reviewers noting its sharp case, faceted lugs, and well-executed dial indices, often comparing its polishing favorably to Grand Seiko. Enthusiasts appreciate its slim, retro design, with some stating it wears smaller than its official size due to the cushion case and close-to-the-wrist feel. The use of the slimline Calibre 6L35 movement is seen as an upgrade, maintaining the watch's slender profile, though some owners express concern over the price point and the perceived value of the movement. Accuracy figures vary, with one owner reporting +5 to +7 seconds per day, while another notes +15/-10 seconds per day. Some owners have noted minor quality control issues such as misaligned screws or a burr on a hand. On balance, owners and reviewers rate the King Seiko KSK highly for its exceptional case and dial finishing at its price point.

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.

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