Side by side
Orient Star M45 F7 Mechanical Moon PhasevsSeiko Prospex SPEEDTIMER Mechanical Chronograph
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
M45 F7 Mechanical Moon Phase41mm
Prospex SPEEDTIMER Mechanical Chronograph42mm
Power Reserve
M45 F7 Mechanical Moon Phase50h
Prospex SPEEDTIMER Mechanical Chronograph45h
Water Resistance
M45 F7 Mechanical Moon Phase50m
Prospex SPEEDTIMER Mechanical Chronograph100m
MSRP
M45 F7 Mechanical Moon Phase$1,590
Prospex SPEEDTIMER Mechanical Chronograph$2,500
Full specifications
Case
6 specsCategory
Mechanical
Chronograph
Diameter
41mm
42mm
Thickness
13.8mm
14.6mm
Lug-to-Lug
49mm
49.5mm
Finish
—
—
Water Resistance
50m
100m
Crystal & Dial
4 specsCrystal Shape
—
Curved
AR Coating
Yes
Anti-reflective coating on inner surface
Dial Color
White
—
Lume
None
LumiBrite on hands and index(es)
Movement
3 specsCaliber
F7M42
8R48
Power Reserve
50h
45h
Jewels
22
34
Pricing
1 specsMSRP
$1,590
$2,500
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