Omega Speedmaster Moonphase 304.33.44.52.03.001 vs Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843

SpecificationOmega Speedmaster Moonphase 304.33.44.52.03.001Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843
BrandOmegaZenith
CollectionSpeedmasterEl Primero
Reference304.33.44.52.03.00103.A386.400/31.C843
CategoryChronographChronograph
Movement TypeAutomaticAutomatic
CaliberOmega 9904Zenith El Primero 400
Power Reserve60h50h
Frequency28,800 vph36,000 vph
Case Diameter44.2mm38.0mm
Case Thickness17.0mm12.6mm
Case MaterialStainless SteelStainless Steel
CrystalSapphireSapphire
Water Resistance100m / 328ft50m / 164ft
Weight126g78g
MSRP$11,600$7,900
Market Price$10,000$7,200

In-Depth Comparison

The Omega Speedmaster Moonphase 304.33.44.52.03.001 and the Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843 represent two compelling options in the luxury watch market. Both timepieces have earned devoted followings among collectors and enthusiasts, but they approach horology from distinctly different perspectives. Let's break down how these two watches compare across the key dimensions that matter most to buyers.

Heritage And Brand Prestige

Omega and Zenith are both highly respected names in watchmaking. Both watches hail from Switzerland, benefiting from the region's deep horological tradition. This particular Speedmaster reference was introduced in 2016, while this El Primero reference debuted in 2019. The Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843 is the newer release, potentially featuring more modern technology and finishing.

Movement And Mechanics

At the heart of the Omega Speedmaster Moonphase 304.33.44.52.03.001 beats the Omega 9904 caliber offering a 60-hour power reserve running at 28,800 vph with 44 jewels. The Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843 is powered by the Zenith El Primero 400 with a 50-hour power reserve operating at 36,000 vph featuring 31 jewels. The Omega Speedmaster Moonphase 304.33.44.52.03.001 wins on power reserve with a 10-hour advantage, which means less frequent winding for those who rotate watches.

Dimensions And Wearability

The Omega Speedmaster Moonphase 304.33.44.52.03.001 features a 44.2mm case at 17.0mm thick with a 51.0mm lug-to-lug measurement, crafted in Stainless Steel. The Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843 comes in at 38.0mm and 12.6mm thick with 44.0mm lug-to-lug, constructed from Stainless Steel. The Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843 wears more compactly on the wrist, making it potentially more suitable for smaller wrists or those who prefer understated proportions. At 78g, the Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843 is the lighter of the two.

Materials And Construction

The Omega Speedmaster Moonphase 304.33.44.52.03.001 uses a Sapphire crystal paired with a Fixed tachymeter bezel, while the Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843 features Sapphire crystal with a Fixed polished bezel. On the wrist, the Omega Speedmaster Moonphase 304.33.44.52.03.001 comes on a Leather strap with Deployant buckle, while the Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843 is fitted with Leather strap featuring Buckle.

Water Resistance And Capability

The Omega Speedmaster Moonphase 304.33.44.52.03.001 is rated to 100m / 328ft and the Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843 to 50m / 164ft. For serious diving or water activities, the Omega Speedmaster Moonphase 304.33.44.52.03.001 offers a meaningful advantage.

Pricing And Value

At retail, the Omega Speedmaster Moonphase 304.33.44.52.03.001 lists for $11,600 compared to $7,900 for the Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843. The Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843 is the more accessible option at MSRP, saving $3,700 at retail. On the secondary market, the Omega Speedmaster Moonphase 304.33.44.52.03.001 trades around $10,000 while the Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843 commands approximately $7,200.

The Verdict

Choosing between the Omega Speedmaster Moonphase 304.33.44.52.03.001 and the Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843 ultimately comes down to personal priorities. For value-conscious buyers, the Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843 delivers excellent quality at a lower price point. for dress occasions and smaller wrists, the Zenith El Primero A386 50th Anniversary 03.A386.400/31.C843 is more versatile. Both watches are exceptional timepieces that will serve their owner well for generations. We recommend trying both on the wrist at an authorized dealer before making your final decision, as comfort and emotional connection are ultimately just as important as specifications.