Omega Speedmaster Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet
Reference 310.55.42.50.13.001
About this watch
The Omega Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet is a masterpiece of horology, blending art, history, and cutting-edge technology. Crafted from Sedna Gold, this watch boasts a unique color that's both warm and striking. Its round shape and sunburst brown finish give it a luxurious feel, while the diamond-set bezel adds a touch of elegance. The 3861 is equipped with a chronograph feature, allowing you to measure elapsed time with precision. 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 reliability. Master Chronometer certified by METAS, this watch has undergone rigorous testing to withstand magnetic fields of up to 15,000 gauss. Its sleek design and exceptional craftsmanship make it a standout in any collection. Whether you're at a formal event or a casual outing, this watch is sure to turn heads.
Buy Now on Jomashop
This is an affiliate link
Key Features
- Sedna Gold case
- Manual-winding chronograph movement
- Co-axial escapement and silicon balance spring
- Master Chronometer certified by METAS
- Diamond-set bezel
- Water resistance up to 50 meters
- 42.00 mm diameter and 13.18 mm height
Specifications
- Brand
- Omega
- Family
- Speedmaster
- Model
- Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet
- Reference
- 310.55.42.50.13.001
- Movement
- 3861
- Movement Features
-
- Small Seconds, Hours, Minutes
- Chronograph
- Chronometer
- Case
- Sedna Gold 42mm
- Dial Color
- Brown
- Crystal
- Sapphire
- Water Resistance
- 50
Current Listings
Omega Speedmaster Triple Date Calendar Moonphase 18k Ref. 175.0034
This Omega Speedmaster features a white dial and is equipped with chronograph, date, day, and moonphase functions. The watch has a 18K yellow gold case measuring 39mm in size.
- Condition: 90%
- Case material: 18K Yellow Gold
- Movement type: Mechanical Automatic
Omega Speedmaster Professional Moonwatch 'Sapphire Sandwich' 3861 - New 2025
The Omega Speedmaster Professional Moonwatch 'Sapphire Sandwich' is a new iconic watch featuring sapphire crystal and a sapphire see-thru caseback showcasing the new caliber 3861 movement.
- Condition: New unworn
- Case size: 42mm diameter
- Movement: Omega Caliber 3861, manual-winding chronograph
- Crystal: sapphire crystal
![[WTS] Rare Omega Speedmaster Professional Moonwatch Moonphase 🌕⏱ – $4,250 Shipped! 🚀](https://external-preview.redd.it/eXJtb3I3aDYzN3hlMb1dGdqo8fEgFEi21fHthc_fbD7SC8lz2SPXS0Fn6EHd.png?format=pjpg&auto=webp&s=f98c7c8150d916014f6c12116a0b15120cd57354)
Rare Omega Speedmaster Professional Moonwatch Moonphase 🌕⏱ – $4,250 Shipped! 🚀
The Omega Speedmaster Professional Moonwatch Moonphase features a manual-wind Caliber 3576.50 movement and comes on its original stainless steel bracelet, which fits up to a 7-inch wrist.
- Condition: excellent with minor signs of wear
- Case size: 42mm diameter
- Movement type: manual wind
![[WTS] Omega Speedmaster 3513.50, 39mm - Full Set - Price Drop](https://preview.redd.it/rys3ut7727xe1.jpg?width=640&crop=smart&auto=webp&s=4c0fd500ab136b58ddcdb9eab411901210803d33)
Omega Speedmaster 3513.50, 39mm - Full Set - Price Drop
This Omega Speedmaster Date features a 39mm stainless steel case, black sunburst dial with date window at 3 o'clock and is perfect for everyday use or building your collection.
- Condition: Good, with a small dent on the bezel between the tachymeter and crystal
- Case Size: 39mm
- Lug To Lug: 44.5mm
- Lug Width: 18mm
![[WTS] Omega Speedmaster 40mm Coaxial Automatic w/ OEM rubber strap and bracelet](https://preview.redd.it/iokha4puz6xe1.jpg?width=640&crop=smart&auto=webp&s=fb7c7e49d090a7e65f2832b06b1698e9fd1e0d7f)
Omega Speedmaster 40mm Coaxial Automatic w/ OEM rubber strap and bracelet
This Speedmaster racing automatic is a beautiful timepiece with excellent condition. It comes with various accessories including an OEM rubber strap, bracelet, and more.
- Condition: Excellent condition
- Case Size: 40mm
- Movement Type: Coaxial Automatic
![[WTS] Omega Speedmaster Bracelet. Clean.](https://preview.redd.it/pq3uf5myp6xe1.jpg?width=640&crop=smart&auto=webp&s=c9cb4c25f72a3b4135196ed9121ac2e2a0825c3e)
Omega Speedmaster Bracelet. Clean.
I am selling my Omega Speedmaster Bracelet, which is in very clean condition. I bought it directly from Omega for $800 and have the invoice to prove it.
- Condition: Very clean
- Purchase Price: $800
- Invoice Included: true
- Shipping Cost: additional
![[WTS] Omega Speedmaster Sapphire Sandwich .002 Reference 💲5️⃣7️⃣2️⃣5️⃣](https://preview.redd.it/x6846hfho6xe1.jpg?width=640&crop=smart&auto=webp&s=0b19e5c3b04e7487e714ef1345b70e2ee0b41aff)
Omega Speedmaster Sapphire Sandwich .002 Reference 💲5️⃣7️⃣2️⃣5️⃣
This listing is for a Omega Speedmaster Sapphire Sandwich .002 Reference. The additional details link provides more information about the watch.
![[WTS] Omega Speedmaster Pro, moonwatch, sapphire sandwich, 3861 movement (2021)](https://preview.redd.it/5j811l3oe6xe1.jpg?width=640&crop=smart&auto=webp&s=9274d4e3ccae582d853def6fb607124411f4fe0a)
Omega Speedmaster Pro, moonwatch, sapphire sandwich, 3861 movement (2021)
A very quick catch and release for me. Up for sale is an Omega Speedmaster Professional 'Sapphire Sandwich' featuring the 3861 movement, known as the moonwatch.
- Condition: Excellent, minor signs of wear
- Movement: 3861
- Bracelet Size: sized to fit, includes all links
- Shipping: CONUS only
Omega Speedmaster Professional Moonwatch 311.30.42.30.01.001
A 2009 Omega Speedmaster Professional Moonwatch, part of the commemorative 50th Anniversary series, comes as a complete set with original Omega presentation box, booklets, and cards. The watch features a manual wind chronograph movement, sapphire crystal, and stainless steel bracelet.
- Condition: Excellent condition with minimal wear
- Movement: Omega Caliber 1861 (Manual Wind Chronograph)
- Case diameter: 42mm
- Lug width: 20mm