Side by side
Seiko King Seiko KSKvsStraton Straton Syncro MKII Mechanical Chrono
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
19 of 29 specs differDiameter
King Seiko KSK36.1mm
Straton Syncro MKII Mechanical Chrono40mm
Power Reserve
King Seiko KSK72h
Straton Syncro MKII Mechanical Chrono—
Water Resistance
King Seiko KSK100m
Straton Syncro MKII Mechanical Chrono100m
MSRP
King Seiko KSK$1,900
Straton Syncro MKII Mechanical Chrono$599
Full specifications
Case
8 specsCategory
Dress
Chronograph
Diameter
36.1mm
40mm
Thickness
11.6mm
12.4mm
Lug-to-Lug
43mm
48mm
Lug Width
19mm
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
—
Caseback
Solid
Sapphire crystal
Crystal & Dial
5 specsCrystal Shape
Box
Domed
AR Coating
Anti-reflective coating on inner surface
Underside
Dial Color
Black
—
Indices
Applied
—
Lume
LumiBrite on hands and index(es)
None
Movement
5 specsCaliber
6R51
Seagull ST19
Type
Automatic
Manual
Beat Rate
28,800 vph
0 vph
Power Reserve
72h
0h
Jewels
24
0
Pricing
1 specsMSRP
$1,900
$599
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