Side by side

Seiko King Seiko KSKvsNOMOS Glashütte Tangomat ruthenium

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
Tangomat ruthenium
NOMOS GlashütteTangomat ruthenium
MSRP $3,700

At a glance

16 of 29 specs differ
Diameter
King Seiko KSK36.1mm
Tangomat ruthenium38.3mm
Power Reserve
King Seiko KSK72h
Tangomat ruthenium43 hoursh
Water Resistance
King Seiko KSK100m
Tangomat ruthenium30m
MSRP
King Seiko KSK$1,900
Tangomat ruthenium$3,700

Full specifications

Case

7 specs
Diameter
36.1mm
38.3mm
Thickness
11.6mm
8.3mm
Lug-to-Lug
43mm
48mm
Lug Width
19mm
20mm
Finish
Brushed and polished
Water Resistance
100m
30m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Box
AR Coating
Anti-reflective coating on inner surface
Indices
Applied
Lume
LumiBrite on hands and index(es)
None

Movement

4 specs
Caliber
6R51
DUW 5001
Beat Rate
28,800 vph
21,600 vph
Power Reserve
72h
43 hoursh
Jewels
24
26

Pricing

1 specs
MSRP
$1,900
$3,700

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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.

NOMOS Glashütte Tangomat ruthenium

Owners widely praise the NOMOS Glashütte Tangomat ruthenium for its Glashütte watchmaking and Bauhaus design, with one owner noting accuracy at +2 seconds/day and a 43-hour power reserve. Some owners find the Tangomat thicker than other models, with case proportions that may not suit its sharp design, and one owner expressed a preference for newer movements over the older Epsilon automatic. Overall, owners value the NOMOS Glashütte Tangomat ruthenium for its precise timekeeping and design ethos.

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