Side by side
Impossible Watch Company IMP ChronographvsSeiko Prospex SPEEDTIMER Mechanical Chronograph
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
15 of 29 specs differDiameter
IMP Chronograph38.5mm
Prospex SPEEDTIMER Mechanical Chronograph42mm
Power Reserve
IMP Chronograph42h
Prospex SPEEDTIMER Mechanical Chronograph45h
Water Resistance
IMP Chronograph30m
Prospex SPEEDTIMER Mechanical Chronograph100m
MSRP
IMP Chronograph$595
Prospex SPEEDTIMER Mechanical Chronograph$2,500
Full specifications
Case
5 specsCategory
—
Chronograph
Diameter
38.5mm
42mm
Thickness
13.5mm
14.6mm
Lug-to-Lug
—
49.5mm
Water Resistance
30m
100m
Crystal & Dial
5 specsCrystal
K1
Sapphire
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Silver Gilt
Black
Lume
None
LumiBrite on hands and index(es)
Movement
4 specsCaliber
Seagull ST1901
8R48
Type
Manual
Automatic
Power Reserve
42h
45h
Jewels
25
34
Pricing
1 specsMSRP
$595
$2,500
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