Omega Speedmaster Speedmaster Professional Moonwatch SpeedyMoon

Reference ST 345.0809

About this watch

The Omega ST 345.0809 Speedmaster Professional Moonwatch SpeedyMoon is a true masterpiece in the world of horology, blending history, functionality, and style. With its iconic design and unique moonphase complication, it's more than just a timepiece; it's a celebration of human achievement and a testament to Omega's craftsmanship. The watch features a reliable hand-wound movement with 17 jewels and a power reserve of 45 hours, making it suitable for everyday wear and special occasions. Its durable stainless steel construction and comfortable wearability with customizable straps make it a perfect choice for those who appreciate both elegance and functionality. Whether you're a seasoned collector or just starting your watch journey, this watch offers something truly special.
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Key Features

  • Hand-wound Omega caliber 866 movement
  • Unique moonphase complication
  • 42mm stainless steel case with tachymeter bezel
  • Plexi glass crystal with water resistance up to 50m
  • Stick and dot indexes on black dial
  • Comfortable wearability with customizable straps

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch SpeedyMoon
Reference
ST 345.0809
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph
  • Moonphase
Case
Stainless Steel 42mm
Dial Color
Black
Crystal
Plexi
Water Resistance
50

Current Listings

[WTS] Omega Speedmaster “Ed White” Cal. 321 Tropical Dial Heavy Patina (Serviced)

Omega Speedmaster “Ed White” Cal. 321 Tropical Dial Heavy Patina (Serviced)

Omega - 105.003-65 · $10,995
This Omega Speedmaster Ed White Ref. 105.003-65 is a highly collectible variant with a stunning brown tropical dial and rich patina. It's one of the last straight-lug Speedmasters worn by astronauts during NASA's Gemini missions and has been professionally serviced in July 2025.

  • Condition: very good condition
  • Movement service date: July 2025
  • Case size: 39mm diameter
  • Year of manufacture: 1965
Posted at
Dec 12, 2025, 12:55 PM
Active
[WTS] Omega Speedmaster Broad Arrow 3594.50

Omega Speedmaster Broad Arrow 3594.50

Omega - 3594.50 · $3,250
The Omega Speedmaster Broad Arrow features a legendary hand-wound Moonwatch design, iconic black dial, and broad-arrow hands.

  • Condition: Pre-owned, excellent condition with minor marks on the hesalite crystal
  • Wrist size compatibility: 7-inch wrist
Posted at
Dec 12, 2025, 10:34 AM
Active
[WTS] Omega Speedmaster Moonphase

Omega Speedmaster Moonphase

This Omega Speedmaster Moonphase is a new piece purchased by the original buyer in December 2023 and overhauled at an Omega service center in November 2024.

  • Condition: Excellent, fully overhauled
  • Case diameter: 44mm
  • Bracelet condition: Scratches (light polish needed)
  • Included items: box, papers, original receipt, sailcloth strap from Artem
Posted at
Dec 11, 2025, 8:15 PM
Active
[WTS] Omega Speedmaster Moonwatch Green Dial Sedna Gold 310.60.42.50.10.001

Omega Speedmaster Moonwatch Green Dial Sedna Gold 310.60.42.50.10.001

Omega - 310.60.42.50.10.001 · $33,000
The Omega Speedmaster Moonwatch features a 42mm case in Sedna gold with a sun-brushed green dial and gold hands & indexes.

  • Condition: Excellent, barely worn
  • Case size: 42mm diameter
  • Bracelet material: Sedna gold
  • Water resistance: null
Posted at
Dec 11, 2025, 4:40 PM
Active
[WTS] Omega Speedmaster Moonwatch Two-Tone Sedna Gold 310.20.42.50.99.001

Omega Speedmaster Moonwatch Two-Tone Sedna Gold 310.20.42.50.99.001

No description provided in the title or additional details.

  • Case material: Two-Tone Sedna Gold
Posted at
Dec 11, 2025, 4:27 PM
Active
[WTS] Omega Speedmaster Day Date Panda 323.30.40.40.04.001 40mm

Omega Speedmaster Day Date Panda 323.30.40.40.04.001 40mm

A vintage-inspired Omega Speedmaster Day Date Panda watch, featuring a 40mm case size.

  • Bracelet length: 7.5 inches
Posted at
Dec 11, 2025, 3:08 PM
Active
[WTS] 2024 Speedmaster -First Omega in Space - 310.30.40.50.06.001 - full kit - factory warranty - very good condition

2024 Speedmaster -First Omega in Space - 310.30.40.50.06.001 - full kit - factory warranty - very good condition

This is a 2024 Speedmaster, the first Omega in space.

  • Condition: very good condition
  • Warranty: factory warranty
Posted at
Dec 11, 2025, 1:00 PM
Active
[WTS] 2024 Omega Speedmaster Moonphase 🌙 - Box and Papers

2024 Omega Speedmaster Moonphase 🌙 - Box and Papers

2024 Omega Speedmaster Moonphase with a 44.25mm stainless steel case, blue sun-brushed dial and ceramic bezel.

  • Condition: Really nice used condition with a few very light marks and minor wear on the box
  • Case size: 44.25mm diameter
  • Movement: 9904
  • Power reserve: 60 hours
Posted at
Dec 11, 2025, 8:17 AM
Active
[WTS] Omega Speedmaster Professional 42mm 310.30.42.50.01.001 | 2024 Complete Set w/ Extra Straps

Omega Speedmaster Professional 42mm 310.30.42.50.01.001 | 2024 Complete Set w/ Extra Straps

This Omega Speedmaster Professional is a 2024 model featuring a 42mm Hesalite crystal. It comes in a complete set with extra straps.

  • Condition: Fair Pre-Owned Condition with Micro-Scratches on Crystal and wear present on clasp, bracelet, and polished parts of case
  • Case Size: 42mm diameter
  • Movement: Master Chronometer
Posted at
Dec 10, 2025, 10:56 PM
Active