Impossible Watch Company IMP ChronographvsRGM Watches Model 455 Classic Chronographs
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.
IMP Chronograph
Model 455 Classic Chronographs
Diameter
38.5mm
38.2mm
Thickness
13.5mm
lowest
13.9mm
Water Resistance
30m
50m
highest
Power Reserve
42h
n/a
MSRP
$655
lowest
$7,950
Movement
Seagull ST1901
Valjoux 7750
Case
4 specsDiameter
38.5mm
38.2mm
Thickness
13.5mm
13.9mm
Lug-to-Lug
n/a
n/a
Water Resistance
30m
50m
Crystal & Dial
2 specsCrystal
K1
Sapphire
Dial Color
Silver Gilt
n/a
Movement
3 specsCaliber
Seagull ST1901
Valjoux 7750
Type
Manual
Automatic
Power Reserve
42h
0h
Pricing
1 specsMSRP
$655
$7,950
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