Side by side
Airain Watches Type 20vsSeiko Prospex SPEEDTIMER Mechanical Chronograph
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
Type 2039mm
Prospex SPEEDTIMER Mechanical Chronograph42mm
Power Reserve
Type 2063h
Prospex SPEEDTIMER Mechanical Chronograph45h
Water Resistance
Type 2050m
Prospex SPEEDTIMER Mechanical Chronograph100m
MSRP
Type 20$3,650
Prospex SPEEDTIMER Mechanical Chronograph$2,500
Full specifications
Case
6 specsCategory
—
Chronograph
Diameter
39mm
42mm
Thickness
14.77mm
14.6mm
Lug-to-Lug
47.7mm
49.5mm
Lug Width
—
20mm
Water Resistance
50m
100m
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
AM2
8R48
Type
Manual
Automatic
Power Reserve
63h
45h
Jewels
25
34
Pricing
1 specsMSRP
$3,650
$2,500
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