Side by side

Lum-Tec RPMvsSeiko Astron

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

RPM
Lum-TecRPM
MSRP $495
Astron
SeikoAstron
MSRP $3,100

At a glance

12 of 29 specs differ
Diameter
RPM43mm
Astron44.1mm
Power Reserve
RPM40h
Astron40h
Water Resistance
RPM50m
Astron100m
MSRP
RPM$495
Astron$3,100

Full specifications

Case

5 specs
Diameter
43mm
44.1mm
Thickness
12.3mm
14.4mm
Lug-to-Lug
41mm
50mm
Lug Width
20mm
14mm
Water Resistance
50m
100m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Super-clear coating
Dial Color
RPM 3
Black
Lume
None
LumiBrite on hands and index(es)

Movement

2 specs
Caliber
—
5X83
Jewels
25
14

Pricing

1 specs
MSRP
$495
$3,100

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