Omega Speedmaster Speedmaster Professional Moonwatch SpeedyMoon

Reference ST 345.0809

Omega Speedmaster Professional Moonwatch SpeedyMoon

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.

Buy Now on Jomashop

This is an affiliate link

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

Current Listings

Omega Speedmaster Reduced - 3510.50 - AMAZING Patina - Bonus Omega Buckle on Strap - $2,650 Shipped

Omega - 3510.50 · $2,650

The Omega Speedmaster Reduced is a stylish and elegant watch with beautiful patina.

Patina: amazing

Posted at

May 27, 2026, 11:00 PM

Active

View listing on r/WatchExchange

Omega Speedmaster 3523.80 39mm - $1,950

Omega - 3523.80 · $1,950

Up for sale is my Omega Speedmaster 3523.80 39mm in great condition.

Condition: great condition for its age
Movement: automatic caliber Omega 1151
Bracelet size: 7-7.25 inch wrists

Posted at

May 27, 2026, 9:24 PM

Active

View listing on r/WatchExchange

2024 Omega Speedmaster Professional Moonwatch White Dial 310.30.42.50.04.001 Full Set

Omega - 310.30.42.50.04.001 · $7,615

2024 Omega Speedmaster Professional Moonwatch with a stainless steel case, 42mm diameter, and manual wind movement.

Condition: Very Nice Preowned with Some Small Light Scratches on the Case, Bracelet and Buckle
Case dimensions: 42mm diameter
Bezel material: Stainless Steel Black Bezel
Band type: Stainless Steel Bracelet with Micro Adjustment

Posted at

May 27, 2026, 8:06 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Professional 3861 "Sapphire Sandwich" (Ref. 310.30.42.50.01.002) adjustable clasp

Omega - 310.30.42.50.01.002 · $5,900

The Omega Speedmaster Professional 3861 'Sapphire Sandwich' is a highly sought-after chronograph configuration that demands a physical relationship with its mechanical intimacy. The watch features a crisp, metallic ratcheting resonance from the Caliber 3861 and a massive edge-to-edge sapphire caseback offering a mesmerizing view of the movement.

Condition: Lightly worn, very sharp lines, flawless finishes, immaculate aluminum tachymeter bezel
Bracelet type: Stainless steel
Bracelet width tapering: 20mm -> 15mm
Movement function: Manual-wind

Posted at

May 27, 2026, 6:56 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Co-axial Chronograph | Ref: 324.30.38.50.01.001 | w/ Box & Papers | $4200

Omega - 324.30.38.50.01.001 · $4,200

This Omega Speedmaster Co-axial Chronograph is a high-end watch that features a chronograph function, making it ideal for those who need to measure elapsed time.

Box: included
Papers: included

Posted at

May 27, 2026, 6:26 PM

Active

View listing on r/WatchExchange