Side by side
Blok Watches Blok 38vsSeiko Prospex SPEEDTIMER Mechanical Chronograph
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
Blok 3838mm
Prospex SPEEDTIMER Mechanical Chronograph42mm
Power Reserve
Blok 38—
Prospex SPEEDTIMER Mechanical Chronograph45h
Water Resistance
Blok 38100m
Prospex SPEEDTIMER Mechanical Chronograph100m
MSRP
Blok 38$379
Prospex SPEEDTIMER Mechanical Chronograph$2,500
Full specifications
Case
5 specsCategory
—
Chronograph
Diameter
38mm
42mm
Thickness
12mm
14.6mm
Lug-to-Lug
—
49.5mm
Lug Width
—
20mm
Crystal & Dial
3 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands and index(es)
Movement
4 specsCaliber
Ronda
8R48
Type
Quartz
Automatic
Power Reserve
—
45h
Jewels
25
34
Pricing
1 specsMSRP
—
$2,500
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