Side by side
Oblvlo JM RotorvsSeiko 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
JM Rotor42mm
Prospex SPEEDTIMER Mechanical39.5mm
Power Reserve
JM Rotor42h
Prospex SPEEDTIMER Mechanical72h
Water Resistance
JM Rotor50m
Prospex SPEEDTIMER Mechanical200m
MSRP
JM Rotor$299
Prospex SPEEDTIMER Mechanical$995
Full specifications
Case
5 specsCategory
Sport
Chronograph
Diameter
42mm
39.5mm
Thickness
13mm
12mm
Lug-to-Lug
46mm
44.5mm
Water Resistance
50m
200m
Crystal & Dial
3 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands and index(es)
Movement
3 specsCaliber
Miyota 8215
6R55
Power Reserve
42h
72h
Jewels
21
24
Pricing
1 specsMSRP
$299
$995
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