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 $2,500

At a glance

12 of 29 specs differ
Diameter
RPM43mm
Astron42mm
Power Reserve
RPM40h
Astron40h
Water Resistance
RPM50m
Astron100m
MSRP
RPM$495
Astron$2,500

Full specifications

Case

6 specs
Category
Chronograph
GMT
Diameter
43mm
42mm
Thickness
12.3mm
12.4mm
Lug-to-Lug
41mm
49.5mm
Lug Width
20mm
14mm
Water Resistance
50m
100m

Crystal & Dial

3 specs
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
$2,500

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