Side by side

Omega Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mmvsSeiko Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition

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

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Omega Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm

Owners widely praise the Omega Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm for its stunning dial, photorealistic moonphase with astronaut footprint, and buttery chronograph buttons. Reviewers and owners alike highlight the technically superior Co-Axial Master Chronometer automatic movement and impressive rate stability. Some owners find the 44.25mm size manageable, especially on larger wrists, and appreciate its distinctiveness compared to other Speedmasters. However, reviewers and several owners note that the 44.25mm x 16.85mm size can feel bold, gaudy, or thick, making it challenging to wear under shirt cuffs, and one reviewer found the crown guards sharp. On balance, owners and reviewers are captivated by the Omega Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm's unique moonphase complication and overall aesthetic, despite some reservations about its substantial size.

Seiko Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition

The Seiko Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition is praised for its well-executed heritage inspiration, clean dial, and balanced design, with its in-house caliber 8R48 noted as a solid movement. Owners appreciate the Zaratsu polishing and the column wheel and vertical clutch on the 8R48 movement, considering it good value. Some find the date wheel deep-set and the bracelet lacking micro-adjustments. The 42.5mm x 15.1mm case size may be large for some wrists. On balance, owners and reviewers rate the Seiko Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition highly for its heritage design and solid in-house movement.

At a glance

15 of 29 specs differ
Diameter
Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm44.25mm
Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition42.5mm
Power Reserve
Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm60h
Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition45h
Water Resistance
Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm100m
Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition100m
MSRP
Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm$12,600
Prospex SPEEDTIMER SPEEDTIMER Mechanical Chronograph Limited Edition$3,000

Full specifications

Case

5 specs
Diameter
44.25mm
42.5mm
Thickness
16.85mm
15.1mm
Lug Width
21mm
20mm
Finish
Steel
Brushed and polished
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Domed
Curved
AR Coating
Anti-reflective coating on inner surface
Indices
Applied
Lume
None
LumiBrite on hands and index(es)

Movement

5 specs
Caliber
Omega 9904
8R46
Beat Rate
0 vph
28,800 vph
Power Reserve
60h
45h
Jewels
0
34
Complications
Chronograph, Moonphase
None

Pricing

1 specs
MSRP
$12,600
$3,000
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