Side by side
Radcliffe Watches L'INSTANT SONOREvsSeiko 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
L'INSTANT SONORE40mm
Prospex SPEEDTIMER Mechanical Chronograph42mm
Power Reserve
L'INSTANT SONORE—
Prospex SPEEDTIMER Mechanical Chronograph45h
Water Resistance
L'INSTANT SONORE30m
Prospex SPEEDTIMER Mechanical Chronograph100m
MSRP
L'INSTANT SONORE$1,588
Prospex SPEEDTIMER Mechanical Chronograph$2,500
Full specifications
Case
7 specsCategory
—
Chronograph
Diameter
40mm
42mm
Thickness
—
14.6mm
Lug-to-Lug
47mm
49.5mm
Lug Width
—
20mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
30m
100m
Crystal & Dial
4 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
—
Black
Lume
None
LumiBrite on hands and index(es)
Movement
3 specsCaliber
Miyota 9015
8R48
Power Reserve
—
45h
Jewels
25
34
Pricing
1 specsMSRP
—
$2,500
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