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] 2025’ Omega Speedmaster FOIS Complete Set

2025’ Omega Speedmaster FOIS Complete Set

A tribute to the first Omega watch worn in space, this updated Speedmaster FOIS captures the same style in modern form.

  • Condition: pre-owned with minor signs of wear
  • Case size: 40mm diameter
  • Box and papers: complete set, including inner & outer boxes, picto, chrono, warranty card, and booklet
Posted at
Mar 16, 2026, 5:24 PM
Active
[WTS] Omega Speedmaster Professional Moonwatch Full Steel 145.022-69 Ghost Bezel Yellow Patina Step Dial 1969 (Serviced) 🔥

Omega Speedmaster Professional Moonwatch Full Steel 145.022-69 Ghost Bezel Yellow Patina Step Dial 1969 (Serviced) 🔥

Omega - 145.022-69 · $5,250
This Omega Speedmaster Moonwatch presents beautifully in full steel, showcasing a strong and sharp case with thick lugs that retain their original shape.

  • Condition: Serviced, lightly polished case
  • Caliber movement serviced: November 2022
  • Bracelet size: up to 7.5 inch / 19cm wrist diameter
  • Case back type: flat case back
Posted at
Mar 16, 2026, 5:18 PM
Active
[WTS] Omega Speedmaster FOIS (bracelet and strap, full set) ($7,250)

Omega Speedmaster FOIS (bracelet and strap, full set) ($7,250)

Omega - FOIS · $7,250
  • Bracelet and strap: full set
Posted at
Mar 16, 2026, 3:23 PM
Active
[WTS] Omega Speedmaster Speedy Tuesday - MINT UNWORN $14,500

Omega Speedmaster Speedy Tuesday - MINT UNWORN $14,500

Omega - ST1 · $14,500
Up for sale is the Speedy Tuesday ST1 in mint condition, never worn or modified.

  • Condition: Mint unworn
  • Case size: 42mm diameter
  • Water resistance: 50m depth rating
Posted at
Mar 16, 2026, 2:07 PM
Active
[WTS] 2019 Omega Speedmaster (FOIS) - 311.32.40.30.01.001 - Box and Papers - $4,295 Shipped ✈️

2019 Omega Speedmaster (FOIS) - 311.32.40.30.01.001 - Box and Papers - $4,295 Shipped ✈️

This is the highly sought-after “First Omega in Space” Speedmaster, featuring the classic straight-lug case and vintage-inspired design.

  • Condition: pre-owned, with very minimal wear
  • Case size: 39.7mm diameter
  • Model edition: Numbered Edition
Posted at
Mar 16, 2026, 1:40 PM
Active
[WTS] Omega Speedmaster Professional White Dial 3861 Moonwatch | Full Set | Omega Boutique 11/2024 | $7,500 Shipped

Omega Speedmaster Professional White Dial 3861 Moonwatch | Full Set | Omega Boutique 11/2024 | $7,500 Shipped

This is the current 3861 manual-wind Moonwatch with a white lacquer dial on bracelet, one of the best modern Speedmaster references Omega makes.

  • Condition: Very good overall condition with normal light wear from careful use.
  • Dial color: white lacquer
  • Bracelet links included: true
  • Box and papers included: true
Posted at
Mar 16, 2026, 10:59 AM
Active
[WTS] Omega Speedmaster Chronograph – Ref. 331.22.42.51.01.001 – 2024 – Full Set – $7,400

Omega Speedmaster Chronograph – Ref. 331.22.42.51.01.001 – 2024 – Full Set – $7,400

A Omega Speedmaster Chronograph with a 2024 model and full set, available for sale.

  • Year: 2024
Posted at
Mar 16, 2026, 10:16 AM
Active
[WTS] Omega Speedmaster Reduced 175.00.33 Gold Dial 39mm Automatic $2,625

Omega Speedmaster Reduced 175.00.33 Gold Dial 39mm Automatic $2,625

Omega - 175.00.33 · $2,625
Selling an Omega Speedmaster Reduced 39mm Auto Gold Dial, watch only with aftermarket bracelet and additional strap.

  • Case size: 39mm diameter
  • Bracelet length: 16.5cm
  • Strap included: true
Posted at
Mar 16, 2026, 3:19 AM
Active
[WTS] 2025 Omega Speedmaster Meteorite Moonphase Complete set + Serialized AD Sales Receipt

2025 Omega Speedmaster Meteorite Moonphase Complete set + Serialized AD Sales Receipt

Omega - 304.30.43.52.01.001 · $85,000
The Omega Speedmaster Moonphase Meteorite features a unique dial made from genuine meteorite, set into a beautifully finished piece of cosmic history on your wrist.

  • Condition: Excellent pre-owned condition
  • Year: 2025
  • Case size: 43mm diameter
  • Dial material: meteorite
Posted at
Mar 16, 2026, 12:13 AM
Active