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

2023 Steel Bracelet Omega Speedmaster 38MM 324.30.38.50.06.001 Box and Papers [WTS]

2023 Steel Bracelet Omega Speedmaster 38MM 324.30.38.50.06.001 Box and Papers

This is a 2023 Steel Speedmaster 38MM Grey dial watch with features such as chronometer, date at 6 O'clock, and water resistance up to 100 Meters.

  • Condition: Excellent
  • Movement: Omega 3330
  • Power Reserve: 52 hours
  • Crystal: Scratch resistant Sapphire Crystal
Posted at
Jan 20, 2026, 11:21 AM
Active
[WTS] Omega Speedmaster Automatic Chronograph Date — Ref. 3211.30.00 | Cal. 1164 COSC — $1,999 + Shipping

Omega Speedmaster Automatic Chronograph Date — Ref. 3211.30.00 | Cal. 1164 COSC — $1,999 + Shipping

Omega - 3211.30.00 · $1,999
This listing appears to be for an Omega Speedmaster Automatic Chronograph Date with reference number 3211.30.00, featuring Calibre 1164 and COSC certification.

Posted at
Jan 20, 2026, 8:34 AM
Active
[WTS] Omega Speedmaster 3861 Sapphire Sandwich 3861 Quick Adjust Bracelet with extras!

Omega Speedmaster 3861 Sapphire Sandwich 3861 Quick Adjust Bracelet with extras!

Omega - 3861 · $6,500
A 2022 Omega Speedmaster 3861 on warranty card with extras such as a new quick adjust clasp, old clasp, and extra links for sizing.

  • Condition: Good condition
  • Warranty status: On warranty
  • Bracelet type: Quick adjust clasp
  • Lugs condition: Show strap change wear
Posted at
Jan 20, 2026, 1:52 AM
Active
[WTS] Omega Speedmaster Date 32105000 Full Set

Omega Speedmaster Date 32105000 Full Set

Omega - 3210.50.00 · $2,450
For sale is a Omega Speedmaster Date, reference 3210.50.00, a versatile and highly wearable take on the iconic Speedmaster line.

  • Condition: Very good overall condition with light, honest wear
  • Case size: 40mm diameter
  • Movement: Omega Caliber 1164 automatic chronograph
  • Functions: Chronograph, running seconds, date at 3 o'clock
Posted at
Jan 20, 2026, 12:25 AM
Active
[WTS]🔥OMEGA SPEEDMASTER SAPPHIRE SANDWICH 310.30.42.50.01.002 COMPLETE 1/2026 BRAND NEW/UNWORN🔥

🔥OMEGA SPEEDMASTER SAPPHIRE SANDWICH 310.30.42.50.01.002 COMPLETE 1/2026 BRAND NEW/UNWORN🔥

This is a brand new, unworn Omega Speedmaster Sapphire Sandwich watch with a beautiful black dial and stainless steel case.

  • Condition: BRAND NEW/UNWORN
  • Case material: Stainless Steel
  • Case size: 42mm diameter
Posted at
Jan 19, 2026, 8:20 PM
Active

2022 Omega Speedmaster Moonwatch Sapphire 42mm 310.30.42.50.01.002 Mint Complete

This 2022 Omega Speedmaster Moonwatch Sapphire 42mm is a first watch worn on the moon, featuring photos and a video on the seller's website.

  • Condition: Minty fresh
  • Case size: 42mm
  • Year: 2022
  • Contents: watch,inner & outer boxes,warranty card,pictogram,master chronometer,instruction booklet,black travel case,hang tag,cleaning cloth,Moonwatch Booklet
Posted at
Apr 7, 2025, 2:59 PM
Active
Omega Speedmaster Chronograph  - Blue - Stainless Steel - 38mm - Mint

Omega Speedmaster Chronograph - Blue - Stainless Steel - 38mm - Mint

This Omega Speedmaster Chronograph features a 38mm stainless steel case, blue dial, and automatic movement.

  • Condition: Pre-Owned - Mint
  • Case size: 38mm diameter
  • Bracelet type: Stainless Steel
  • Dial color: Blue
Posted at
Apr 5, 2025, 6:13 PM
Active
Omega Speedmaster 321 Ed White

Omega Speedmaster 321 Ed White

This Omega Speedmaster 321 Ed White is an original purchase from a US OB in 2023, worn sparingly since.

  • Condition: Good condition with minor scuffs
  • Warranty: includes warranty cards
  • Links: all links included
Posted at
Apr 4, 2025, 6:34 PM
Active
2023 Omega Speedmaster �SNOOPY� 50th Anniversary 310.32.42.50.02.001 BOXES/PAPER

2023 Omega Speedmaster �SNOOPY� 50th Anniversary 310.32.42.50.02.001 BOXES/PAPER

Omega - 310.32.42.50.02.001 · $16,200
This is a 2023 Omega Speedmaster �SNOOPY� 50th Anniversary model, one of the most exclusive pieces in the watch world. It features a stainless steel case with a silver dial and comes with an OEM Omega stainless steel bracelet.

  • Condition: Excellent pre-owned
  • Case diameter: 42mm
  • Water resistance: 50m depth rating
  • Movement type: Manual
Posted at
Apr 4, 2025, 3:06 PM
Active