Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Sapphire / Calf
Reference 310.32.42.50.01.002
About this watch
The Omega Speedmaster Professional Moonwatch 3861 is an engineering marvel that combines style with functionality, paying homage to its illustrious past as the first watch worn on the moon. This iconic timepiece boasts a sleek, matte black dial and polished stainless steel case, striking an excellent balance between boldness and subtlety. At its heart lies the Omega caliber 3861, an updated version of the legendary caliber 861/1861, featuring a Co-Axial escapement and silicon balance spring for accuracy and resistance to magnetic fields up to 15,000 gauss. The watch's robust stainless steel construction and sapphire crystal provide a durable exterior and protect the watch face from scratches, while its water resistance of 50 meters ensures it can withstand accidental splashes. With an open case back revealing the intricate movement within, this timepiece showcases Omega's craftsmanship and attention to detail. The Speedmaster is a versatile accessory that adapts effortlessly to any style or occasion, making it a worthy investment for anyone who appreciates the finer things in life.
Key Features
- Manual-winding chronograph movement
- Master Chronometer Certified
- 50-meter water resistance
- Co-Axial escapement and silicon balance spring
- Open case back revealing intricate movement
- Robust stainless steel construction with sapphire crystal
Specifications
- Brand
- Omega
- Family
- Speedmaster
- Model
- Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Sapphire / Calf
- Reference
- 310.32.42.50.01.002
- Movement
- 3861
- Movement Features
-
- Small Seconds, Hours, Minutes
- Chronograph
- Chronometer
- Case
- Stainless Steel 42mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 50
Current Listings
![[WTS] OMEGA Speedmaster Calibre 321 "Ed White" Ref. 311.30.40.30.01.001 - ULTIMATE SET!](https://preview.redd.it/oe0sav5bf3bg1.jpg?width=640&crop=smart&auto=webp&s=2ba60cf580586df3de06090ced49cc327e2ba00a)
OMEGA Speedmaster Calibre 321 "Ed White" Ref. 311.30.40.30.01.001 - ULTIMATE SET!
This OMEGA Speedmaster Calibre 321 Ref. 311.30.40.30.01.001 is a faithful recreation of the reference 105.003, famously worn by astronaut Ed White during America's first spacewalk.
- Condition: UNWORN
- Material: stainless steel
- Movement: Calibre 321 column-wheel chronograph
- Caseback: sapphire
![[WTS] Omega Speedmaster Professional White Dial Full Set](https://external-preview.redd.it/MzWxT-kowDf0cjKDdzLRmK1Cc7rLUr0IEDBYsxNUE2c.jpeg?auto=webp&s=ab82303898c99d1c3dd1ea56b16af4fc11db7525)
Omega Speedmaster Professional White Dial Full Set
A Omega Speedmaster Professional with a white dial, sold on a flat link bracelet inspired by the original 1957 model.
- Bracelet style: flat link bracelet
- Bracelet origin: Omega Boutique at South Coast Plaza in Costa Mesa, CA
- Clasp condition: some snail trails
![[WTS] Omega Speedmaster Moonphase Blue - 304.33.44.52.03.001 - Box + Papers](https://preview.redd.it/7tmheg6sdzag1.jpg?width=640&crop=smart&auto=webp&s=ab743e14079c83e17d1a95d6fb19bb57973394af)
Omega Speedmaster Moonphase Blue - 304.33.44.52.03.001 - Box + Papers
Gorgeous Omega Speedmaster Moonphase Blue, comes with box and papers and extra strap.
- Condition: great shape with minor signs of wear
- Case Wear: minor
- Includes: box,papers,extra strap
![[WTS] Omega Speedmaster 3520.53 Box, Manual, Card - $2,850](https://preview.redd.it/7m4ni8hjauag1.jpg?width=640&crop=smart&auto=webp&s=76a140dbec4117e746ccad348167fe5b610fd996)
Omega Speedmaster 3520.53 Box, Manual, Card - $2,850
Up for sale is my Omega Speedmaster 3520.53 Full Kit, measuring 39mm with an automatic movement and a steel case on an original Omega Steel bracelet.
- Condition: good condition with usage marks and some patina
- Size: 39mm diameter
- Case material: steel
- Bracelet size range: fits up to 7 inch wrists with extra links available
![[WTS] Omega Speedmaster “Ed White” Cal. 321 Tropical Dial Heavy Patina (Serviced)](https://preview.redd.it/4j1mey6a1uag1.jpg?width=640&crop=smart&auto=webp&s=72bb66fb03c4b968505bd4371b3a7f2ba360e670)
Omega Speedmaster “Ed White” Cal. 321 Tropical Dial Heavy Patina (Serviced)
This Omega Speedmaster Ed White Ref. 105.003-65 is a historic variant with a stunning brown tropical dial and matching tritium hands. It's one of the most collectible Speedmasters among enthusiasts due to its unique features and significance in Omega's history.
- Condition: Very good condition, with signs of previous polish
- Size: 39mm diameter
- Year: 1965
- Movement serviced: Yes, professionally serviced in July 2023
![[WTS] Omega Speedmaster Pro Moon Watch 3570.50 W/1498/840 Bracelet (Watch Only) $3800](https://preview.redd.it/fjot2jzxvtag1.jpeg?auto=webp&s=ab7ac235cc83995fa88d955f8bd64302ece739ef)
Omega Speedmaster Pro Moon Watch 3570.50 W/1498/840 Bracelet (Watch Only) $3800
This Omega Speedmaster Pro Moon Watch is being sold in pre-owned condition, with some marks on the hesalite crystal.
- Condition: PRE-OWNED
- Case size: 42MM
- Box: NO
- Card/papers: NO
![[WTS] Omega Speedmaster Professional 42mm “Sapphire Sandwich” 310.30.42.50.01.002 - 11/2025 Complete Set](https://preview.redd.it/vnn414eqpsag1.jpg?width=640&crop=smart&auto=webp&s=5534bbf300c79cd8f3ebc40c9a13858961aafb05)
Omega Speedmaster Professional 42mm “Sapphire Sandwich” 310.30.42.50.01.002 - 11/2025 Complete Set
This is a brand new Omega Speedmaster Professional 'Sapphire Sandwich' 42mm watch, coming with a complete set including the watch itself, 11/2025 card, triple-boxed packaging, serial tag, manual, and Master Chronometer certification.
- Condition: Like New
- Case size: 42mm
- Depth rating: 30m
- Service history: Unknown
![[WTS] 2025 Omega Speedmaster Professional “Sapphire Sandwich” Moonwatch – Latest Model, MINT OPEN BOX CONDITION – Ref. 310.30.42.50.01.002 – COMPLETE SET – USA Warranty thru Aug 2030 – $6,900 FIRM net + 🏷️ within CONUS ($9000 MSRP)](https://preview.redd.it/fckv6t3nisag1.jpg?width=640&crop=smart&auto=webp&s=892793c3d1070f520a85374908689d1575d10acf)
2025 Omega Speedmaster Professional “Sapphire Sandwich” Moonwatch – Latest Model, MINT OPEN BOX CONDITION – Ref. 310.30.42.50.01.002 – COMPLETE SET – USA Warranty thru Aug 2030 – $6,900 FIRM net + 🏷️ within CONUS ($9000 MSRP)
The Omega Speedmaster Professional 'Sapphire Sandwich' Moonwatch is the latest generation with a Master Chronometer movement.
- Condition: Mint open box condition, worn twice
- Movement: Omega 3861 Master Chronometer
- Crystal: sapphire crystal front and exhibition sapphire caseback
- Case Size: 42mm diameter
![[WTS] Omega Speedmaster Reduced 3510.50 – Papers & extra Uncle Seiko bracelet](https://preview.redd.it/30dgcxnnsrag1.jpg?width=640&crop=smart&auto=webp&s=518de674a0a1a6ec6611bca8abcb3d834cd6f24d)
Omega Speedmaster Reduced 3510.50 – Papers & extra Uncle Seiko bracelet
Up for sale is my Omega Speedmaster Reduced ref. 3510.50, a classic automatic Speedmaster in great overall condition.
- Condition: Very good, with normal light wear consistent with use
- Case size: 39mm diameter
- Movement: Automatic chronograph
- Year: 2005