Side by side
Seiko Prospex SPEEDTIMERvsZero West M1 Mosquito (44mm)
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
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At a glance
12 of 29 specs differDiameter
Prospex SPEEDTIMER42.5mm
M1 Mosquito (44mm)44mm
Power Reserve
Prospex SPEEDTIMER45h
M1 Mosquito (44mm)41h
Water Resistance
Prospex SPEEDTIMER100m
M1 Mosquito (44mm)100m
MSRP
Prospex SPEEDTIMER$3,000
M1 Mosquito (44mm)$4,770
Full specifications
Case
5 specsCategory
Chronograph
—
Diameter
42.5mm
44mm
Thickness
15.1mm
14.1mm
Lug-to-Lug
50mm
49.6mm
Lug Width
20mm
22mm
Crystal & Dial
3 specsCrystal Shape
Curved
—
AR Coating
Anti-reflective coating on inner surface
—
Lume
LumiBrite on hands and index(es)
None
Movement
3 specsCaliber
Seiko 8R46
Sellita SW200-1
Power Reserve
45h
41h
Jewels
34
0
Pricing
1 specsMSRP
$3,000
$4,770
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