Watch Almanac
Seiko

King Seiko KSK

Ref. SPB279

Case diameter
37 mm
Manufacturer spec
Lug-to-lug
43.6 mm
Manufacturer spec
Thickness
12.1 mm
Manufacturer spec
Lug width
19 mm
Manufacturer spec

Retail price $1,700 (US, Feb 2022)

Ideal fit
Wrist flat: 55.1 mmLug-to-lug: 43.6 mm

How the King Seiko KSK wears

Its lugs add 6.6 mm to the 37 mm case, close to the 7.1 mm typical across the almanac, so its diameter is a fair guide to how it wears.

On our fit model it sits best on wrists from 6.25" to 7.25" (15.9–18.4 cm); below 6.25" the lugs start to reach the edge of the wrist.

At 12.1 mm thick it is thicker than 77% of the 56 other dress watches we've measured, so expect it to sit tall on the wrist.

Its 19 mm lug width is one of the most common strap sizes; 21 other watches here share it, so aftermarket straps are easy to find.

Will the King Seiko KSK fit your wrist?

With a 43.6 mm lug-to-lug, here is how it wears across common wrist sizes. We estimate the flat top of each wrist from its circumference; measure yours for a closer answer in the fit finder.

WristFlat width (est.)Fit
6"47.2 mmSnug, lugs near the edge
6.5"51.2 mmIdeal fit
7"55.1 mmIdeal fit
7.5"59.1 mmWears small
8"63 mmWears small

Specifications

Reference
SPB279
Collection
King Seiko
Status
In production
Introduced
2022
Case material
stainless steel
Crystal
box-shaped sapphire
Water resistance
100 m
Bezel
fixed
Dial
silver
Strap / bracelet
stainless steel bracelet
Weight
129 g
Style
Dress, Everyday

Movement

Caliber
Seiko 6R31
Type
automatic
Power reserve
70 hours
Frequency
21,600 vph (3 Hz)
Jewels
24
Accuracy
+25/-15 s/day

Takes 19 mm straps. See other 19 mm watches and straps.

More King Seiko references

Watches that wear the same size

Other watches within 1.5 mm of its lug-to-lug.

Same 19 mm lug width

All 19 mm watches

These take the same straps as the King Seiko KSK.

Sources