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.
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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

BNIB Omega SPEEDMASTER SILVER SNOOPY AWARD 50TH ANNIVERSARY 2025 FULL SET
A 2025 Omega Speedmaster Professional Moonwatch, specifically the Silver Snoopy Award edition, featuring a 42mm stainless steel case and silver dial with blue subdials. This watch is part of the 50th Anniversary celebration and comes with a full set of accessories and documentation.
- Condition: Brand New in Box (BNIB)
- Case Size: 42mm
- Movement:
- Water Resistance:

Omega Speedmaster Moonwatch White Dial 310.30.42.50.04.001
Up for sale is the Omega Speedmaster Moonwatch White Dial, a beautiful watch under factory warranty until August 2029.
- Condition: Mint condition with minor signs of wear
- Warranty Start Date: August 2024
- Msrp: 8100
- Comes With: Outer Box, Inner Speedmaster Box, Operating Instructions, Moonwatch Booklet, Pictograms Card, Master Chronometer Card, International Warranty Card

Omega Speedmaster Moonwatch Sapphire Sandwich-310.30.42.50.01.002
A direct descendant of the watch worn on the Moon, this Omega Speedmaster Moonwatch features a classic asymmetrical 42mm stainless steel case and black stepped dial, powered by a hand-wound Co-Axial Master Chronometer 3861 movement.
- Condition: EXCELLENT, very light signs of use
- Case Size: 42mm diameter
- Material: stainless steel
- Bezel: black aluminum with tachymeter scale

Omega Speedmaster �Dark Side of the Moon� 311.92.44.51.01.007
A bold reimagining of the iconic Moonwatch, crafted from a single block of black ceramic with a stunning black zirconium oxide dial and Co-Axial Master Chronometer movement.
- Condition: EXCELLENT - Very light signs of wear, if any
- Case Size: 44.25mm diameter
- Material: Black Ceramic
- Bezel: Black Ceramic with Tachymeter Scale

Omega SPEEDMASTER MOONPHASE 18K YELLOW GOLD STEEL GREEN BEZEL GREY DIAL 2024
This Omega Speedmaster Moonwatch features a 18K yellow gold and stainless steel case with a green ceramic bezel and grey dial.
- Condition: Excellent, unpolished condition
- Case size: 44.25mm diameter
- Movement: Omega Co-Axial Master Chronometer 9904 chronograph movement
- Warranty: under 5 years factory warranty remaining
Omega Speedmaster Reduced "Marui" - 3510.21 - White - Steel - 39mm
A vintage Omega Speedmaster Reduced 'Marui' watch in excellent condition, featuring a white dial and stainless steel case.
- Condition: Pre-Owned, Excellent Grade
- Case Size: 39mm diameter
- Material: Stainless Steel
- Dial Color: White

2006 Omega Speedmaster "Schumacher Limited Edition" Ref. 3559.32 with Box & Paper
The Omega Speedmaster Michael Schumacher Limited Edition features a striking 42mm stainless steel case, white panda dial with black subdials, and the reliable automatic Caliber 3301 movement. It has a tachymeter bezel, sapphire crystal, and 100m water resistance, blending style with functionality.
- Condition: Excellent (little to no wear)
- Movement: Automatic
- Case width: 42mm diameter
- Strap length: 8.00 inches

>>ReDuCeD<< OMEGA SPEEDMASTER AUTOMATIC 3211.31 PANDA DIAL
A stainless steel Omega Speedmaster Automatic with Panda dial, featuring the Omega 1164 movement and a diameter of 40mm.
- Condition: Excellent
- Movement: Omega 1164
- Bracelet Size: fits up to 7.25"
Omega Speedmaster Chronograph Racing Chronometer Carbon Black Dial 3552.59.00
The Omega Speedmaster Chronograph Racing Chronometer features a carbon black dial and is powered by a mechanical automatic movement.
- Condition: 98%
- Case Material: Stainless Steel
- Movement Type: Mechanical Automatic (Cal. 3301)
- Case Size: 42mm