Side by side
Omega Speedmaster X 33 Marstimer Chronograph 45mmvsSeiko Astron
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
17 of 29 specs differDiameter
Speedmaster X 33 Marstimer Chronograph 45mm45mm
Astron44.1mm
Power Reserve
Speedmaster X 33 Marstimer Chronograph 45mm—
Astron40h
Water Resistance
Speedmaster X 33 Marstimer Chronograph 45mm30m
Astron100m
MSRP
Speedmaster X 33 Marstimer Chronograph 45mm$7,000
Astron$3,100
Full specifications
Case
7 specsDiameter
45mm
44.1mm
Thickness
14.89mm
14.4mm
Lug-to-Lug
48.5mm
50mm
Lug Width
20mm
14mm
Finish
Titanium
Brushed and polished
Water Resistance
30m
100m
Caseback
—
Solid
Crystal & Dial
4 specsCrystal Shape
Domed
Curved
AR Coating
—
Super-clear coating
Indices
—
Applied
Lume
None
LumiBrite on hands and index(es)
Movement
5 specsCaliber
Omega 5622
5X83
Beat Rate
0 vph
28,800 vph
Power Reserve
0h
40h
Jewels
0
14
Complications
Chronograph
None
Pricing
1 specsMSRP
$7,000
$3,100
More watches worth a look
Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.
Follow this matchup
Get a note when Omega Speedmaster X 33 Marstimer Chronograph 45mm vs Seiko Astron gets more votes, a community discussion, or a price drop. No account needed.
People also compared
Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.
Christopher Ward C63 ValourvsSeiko AstronAstor + Banks ChronovsSeiko AstronIkepod Chronopod C001vsSeiko AstronIkepod Chronopod C006vsSeiko AstronAVI-8 Hawker Hurricane 90th Anniversary Chronograph Limited EditionvsOmega Speedmaster X 33 Marstimer Chronograph 45mmAstor + Banks ChronovsOmega Speedmaster X 33 Marstimer Chronograph 45mm