Side by side
Smiths BABY SPEEDBIRD PRS-51vsSeiko King Seiko KSK
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
BABY SPEEDBIRD PRS-5136mm
King Seiko KSK36.1mm
Power Reserve
BABY SPEEDBIRD PRS-51—
King Seiko KSK72h
Water Resistance
BABY SPEEDBIRD PRS-51100m
King Seiko KSK100m
MSRP
BABY SPEEDBIRD PRS-51—
King Seiko KSK$1,900
Full specifications
Case
5 specsCategory
—
Dress
Diameter
36mm
36.1mm
Thickness
11.4mm
11.6mm
Lug-to-Lug
42mm
43mm
Lug Width
18mm
19mm
Crystal & Dial
3 specsCrystal Shape
Flat
Box
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
SuperLuminova
LumiBrite on hands and index(es)
Movement
3 specsCaliber
Miyota 9015
6R51
Power Reserve
—
72h
Jewels
25
24
Pricing
1 specsMSRP
—
$1,900
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