Side by side
Loresum LS04vsSeiko Prospex SPEEDTIMER Mechanical
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
LS0439.5mm
Prospex SPEEDTIMER Mechanical39.5mm
Power Reserve
LS0440h
Prospex SPEEDTIMER Mechanical72h
Water Resistance
LS0450m
Prospex SPEEDTIMER Mechanical200m
MSRP
LS04—
Prospex SPEEDTIMER Mechanical$995
Full specifications
Case
4 specsCategory
—
Chronograph
Thickness
9mm
12mm
Lug-to-Lug
46.5mm
44.5mm
Water Resistance
50m
200m
Crystal & Dial
4 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Blue Aventurine
Black
Lume
Super-LumiNova® BGW9
LumiBrite on hands and index(es)
Movement
3 specsCaliber
Miyota 9015
6R55
Power Reserve
40h
72h
Jewels
25
24
Pricing
1 specsMSRP
—
$995
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