Side by side
Serket Watch Co TachymetrevsSeiko Prospex SPEEDTIMER
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
15 of 29 specs differDiameter
Tachymetre42.5mm
Prospex SPEEDTIMER42mm
Power Reserve
Tachymetre—
Prospex SPEEDTIMER40h
Water Resistance
Tachymetre50m
Prospex SPEEDTIMER100m
MSRP
Tachymetre$299
Prospex SPEEDTIMER$2,200
Full specifications
Case
6 specsCategory
—
Chronograph
Diameter
42.5mm
42mm
Thickness
12mm
12.9mm
Lug-to-Lug
53mm
49.6mm
Lug Width
22mm
20mm
Water Resistance
50m
100m
Crystal & Dial
4 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Super-clear coating
Dial Color
Teal Blue
Black
Lume
C3 SuperLuminova
LumiBrite on hands and index(es)
Movement
4 specsCaliber
Seiko VK64
5X83
Type
Mecaquartz
Quartz
Power Reserve
—
40h
Jewels
25
14
Pricing
1 specsMSRP
$299
$2,200
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