Side by side

Loresum LS01vsSeiko Prospex SPEEDTIMER

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

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LS01
LoresumLS01
Prospex SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $3,000
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At a glance

14 of 29 specs differ
Diameter
LS0142mm
Prospex SPEEDTIMER42.5mm
Power Reserve
LS0140h
Prospex SPEEDTIMER45h
Water Resistance
LS0150m
Prospex SPEEDTIMER100m
MSRP
LS01—
Prospex SPEEDTIMER$3,000

Full specifications

Case

6 specs
Category
—
Chronograph
Diameter
42mm
42.5mm
Thickness
12.5mm
15.1mm
Lug-to-Lug
51mm
50mm
Lug Width
22mm
20mm
Water Resistance
50m
100m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
—
Black
Lume
Swiss Super-LumiNova® BGW9
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Miyota 9015
8R46
Power Reserve
40h
45h
Jewels
25
34

Pricing

1 specs
MSRP
—
$3,000
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