Side by side
Blok Watches Blok 38vsSeiko Prospex SPEEDTIMER
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
Blok 3838mm
Prospex SPEEDTIMER42mm
Power Reserve
Blok 38—
Prospex SPEEDTIMER40h
Water Resistance
Blok 38100m
Prospex SPEEDTIMER100m
MSRP
Blok 38$379
Prospex SPEEDTIMER$2,200
Full specifications
Case
5 specsCategory
—
Chronograph
Diameter
38mm
42mm
Thickness
12mm
12.9mm
Lug-to-Lug
—
49.6mm
Lug Width
—
20mm
Crystal & Dial
3 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Super-clear coating
Lume
None
LumiBrite on hands and index(es)
Movement
3 specsCaliber
Ronda
5X83
Power Reserve
—
40h
Jewels
25
14
Pricing
1 specsMSRP
—
$2,200
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