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

[US] Omega Speedmaster Grey Side Of The Moon - GSOTM - Grey Dial - 44mm - 311.93.44.51.99.001

Omega - 311.93.44.51.99.001 · $7,750

This Omega Speedmaster features a grey dial and is housed in a 44mm case. It functions perfectly mechanically and includes various accessories.

Condition: Great condition, small chip on edge of case back
Case size: 44mm diameter

Posted at

Jan 31, 2026, 10:49 AM

Active

View listing on r/WatchExchange

[US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set

Omega - 310.30.42.50.04.001 · $7,750

This Omega Speedmaster Moonwatch Professional features a white dial and comes with a full set of accessories.

Condition: Fantastic condition
Box Set: yes, includes inner, outer, & removable travel case
Accessories: historical booklet, user manual, microfiber cloth, purchase receipt, serialized case back sticker, pictogram card, master chronometer card, warranty card (dated 03/2024)
Clasp Condition: minor hairlines

Posted at

Jan 31, 2026, 10:31 AM

Active

View listing on r/WatchExchange

2024 Omega Speedmaster “First Omega in Space” 310.30.40.50.06.001 – Full Set - $6,950 Shipped

Omega - 310.30.40.50.06.001 · $6,950

The Omega Speedmaster 'First Omega in Space' is a modern reissue honoring the Speedmaster worn by Wally Schirra during the Sigma 7 mission, featuring a slim 39.7mm case and vintage-inspired design.

Condition: Good (normal signs of wear)
Case size: 39.7mm
Movement: Manual-wind chronograph (Omega Caliber 3861)
Crystal: Sapphire

Posted at

Jan 31, 2026, 8:52 AM

Active

View listing on r/WatchExchange

Omega Speedmaster Triple Date Blue Dial Ref : 3521.80 Condition Good Price : 2100$ ( USD )

Omega - 3521.80 · $2,100

This Omega Speedmaster Triple Date features a blue dial, automatic Caliber 1151 movement, and is available for purchase for $2100.

Condition: Good
Size: 39mm diameter
Movement: Caliber 1151 (Automatic)

Posted at

Jan 31, 2026, 4:16 AM

Active

View listing on r/WatchExchange

Omega Speedmaster. MK40. Triple Date. 🔥

Omega - MK40 · $2,750

A 39mm Omega Speedmaster with automatic movement and triple date functionality, available for sale in New Jersey.

Case size: 39mm diameter
Movement type: Automatic

Posted at

Jan 30, 2026, 5:37 PM

Active

View listing on r/WatchExchange

PRICE DROP 2023 Omega Speedmaster Moonphase Sedna Gold

Omega - 304.23.44.52.13.001 · $9,348

2023 Omega Speedmaster Moonphase Sedna Gold features a 44.25mm 18k Sedna gold case with a brown sun-brushed dial and precision moonphase display at 6 o'clock.

Condition: Excellent, with light signs of wear
Case size: 44.25mm
Case material: 18k Sedna Gold
Dial color: Brown sun-brushed

Posted at

Jan 30, 2026, 4:42 PM

Active

View listing on r/WatchExchange

2025 Omega Speedmaster Professional Moonwatch Sapphire Sandwich $6,499

Omega - 310.30.42.50.01.002 · $6,499

The Omega Speedmaster Professional Moonwatch Sapphire Sandwich features a 42mm stainless steel case with a sapphire front and display case back, showcasing the updated Caliber 3861 movement. It offers enhanced durability, accuracy, and visibility of the beautifully finished movement.

Condition: Excellent condition - no dings, dents or scratches
Movement: Hand wound Cal 3861
Power reserve: 50 hours
Case size: 42mm diameter

Posted at

Jan 30, 2026, 12:36 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Moonwatch Professional 42mm White Dial 310.30.42.50.04.001 Complete

Omega - 310.30.42.50.04.001 · $7,650

This Omega Speedmaster Moonwatch Professional features a white dial and is in very good condition with minimal handling marks.

Condition: In very good condition, rated at 9.7/10
Case Diameter: 42mm
Included Accessories: Inner & outer boxes, manual, booklet, Pictogram card, Master Chronometer card, removed links and warranty card (dated 2024)

Posted at

Jan 30, 2026, 10:57 AM

Active

View listing on r/WatchExchange

Omega Speedmaster 38 Co-Axial Chronograph Grey Dial 324.32.38.50.06.001

Omega - 324.32.38.50.06.001 · $4,550

This Omega Speedmaster 38 Co-Axial Chronograph features a grey dial and is in excellent condition with minimal handling marks.

Condition: In very good condition, rated at 9.8/10
Box: Inner & Outer
Papers: Manual, Warranty Card (dated 2022), Pictogram Card

Posted at

Jan 30, 2026, 10:42 AM

Active

View listing on r/WatchExchange