Side by side

Loresum LS01vsSeiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition

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

LS01
LoresumLS01

At a glance

13 of 29 specs differ
Diameter
LS0142mm
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition42mm
Power Reserve
LS0140h
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition45h
Water Resistance
LS0150m
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition100m
MSRP
LS01
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition$2,500

Full specifications

Case

5 specs
Category
Chronograph
Thickness
12.5mm
14.6mm
Lug-to-Lug
51mm
49.5mm
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
8R48
Power Reserve
40h
45h
Jewels
25
34

Pricing

1 specs
MSRP
$2,500
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