Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel - Sedna Gold / Pink / Alligator

Reference 310.23.42.50.99.001

About this watch

The Omega Speedmaster Professional Moonwatch 3861 is a masterpiece of horology that seamlessly blends heritage, luxury, and modern technology. Its stunning pink sunburst dial radiates warmth and elegance, while the Sedna gold accents harmonize beautifully with the stainless steel case. The chronograph function is easily accessible, making it practical for everyday use. At its heart beats the Omega Caliber 3861 movement, featuring a co-axial escapement and silicon balance spring. This timepiece is not just a watch; it's a statement of sophistication and style that pairs well with both formal and casual attire.
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Key Features

  • Omega Caliber 3861 movement
  • Sedna gold accents
  • Stainless steel case
  • Tachymeter bezel
  • Water resistance up to 50 meters
  • 42mm diameter
  • Co-axial escapement and silicon balance spring

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 3861 Stainless Steel - Sedna Gold / Pink / Alligator
Reference
310.23.42.50.99.001
Movement
3861
Movement Features
  • Small Seconds, Hours, Minutes
  • Chronograph
  • Chronometer
Case
42mm
Dial Color
Pink
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] Omega Speedmaster Broad Arrow 1957 321.10.42.50.01.001 Full Set

Omega Speedmaster Broad Arrow 1957 321.10.42.50.01.001 Full Set

A modern tribute to the legendary original Speedmaster design, this Omega Speedmaster Broad Arrow 1957 features a black dial and classic Speedmaster styling with a modern 42 mm case for everyday wearability.

  • Condition: Excellent
  • Case size: 42 mm diameter
  • Set: Full set (watch, box, papers, and accessories as originally supplied)
Posted at
Feb 15, 2026, 4:21 PM
Active
[WTS] Omega Speedmaster Hesalite 310.30.42.50.01.001 $5,750 Full Set

Omega Speedmaster Hesalite 310.30.42.50.01.001 $5,750 Full Set

This Omega Speedmaster Hesalite is an iconic watch under $10k, available with all original accessories.

  • Condition: Excellent preowned condition
  • Shipping: Fully insured shipping included in price
Posted at
Feb 15, 2026, 3:47 PM
Active
[WTS] Omega Speedmaster Black Dial 3513.50 Date

Omega Speedmaster Black Dial 3513.50 Date

Omega - 3513.50.00 · $1,700
A 39mm Omega Speedmaster Date with a black dial, recently serviced and polished.

  • Condition: 100% authentic Omega, recently serviced and polished
  • Case Diameter: 39mm
  • Cosmetic Condition Glass: flawless
  • Cosmetic Condition Case: no damage
Posted at
Feb 15, 2026, 3:17 PM
Active
[WTS] Omega 2023 Speedmaster Professional

Omega 2023 Speedmaster Professional

Additional Details: I’m selling my Omega Speedmaster Professional because I finally got my 321 Speedmaster. Watch is a 9/10 in shape.

  • Condition: 9/10 in shape
  • Material: full set
Posted at
Feb 15, 2026, 2:44 PM
Active
[WTS] Omega Speedmaster CK2998 Limited Edition “Blue Panda” - Full Set - 311.33.40.30.02.001 - Price Reduced!

Omega Speedmaster CK2998 Limited Edition “Blue Panda” - Full Set - 311.33.40.30.02.001 - Price Reduced!

This Omega Speedmaster CK2998 'Blue Panda' is a modern classic with a striking design and features a manual winding OMEGA calibre 1861 movement.

  • Condition: Excellent condition, barely worn
  • Case size: 40mm
  • Movement: Manual winding OMEGA calibre 1861
Posted at
Feb 15, 2026, 1:52 PM
Active
[WTS] 🚀 ‼️Omega Speedmaster Mk40 (Ref. 3520.50)‼️ 🚀

🚀 ‼️Omega Speedmaster Mk40 (Ref. 3520.50)‼️ 🚀

Omega - 3520.50 · $2,899
A masterclass in packaging, the Omega Speedmaster Mk40 (Ref. 3520.50) features a 12-hour chronograph, 24-hour indicator, and full calendar in a case that wears better than standard 42mm Professional models.

  • Condition: Good condition with honest wear. Small concentration of tiny pin marks on the left side of the case.
  • Case Wear: left side
  • Diameter: 39mm
  • Lug To Lug: 44.5mm
Posted at
Feb 15, 2026, 1:38 PM
Active
[WTS] BNIB Omega Speedmaster Professional White Dial

BNIB Omega Speedmaster Professional White Dial

The Omega Speedmaster Professional features a white dial and is powered by the Master Chronometer Omega Cal. 3861 movement.

  • Condition: 10/10 condition, perfect
  • Msrp: $8,700
  • Movement: Master Chronometer Omega Cal. 3861
  • Case size: 42mm
Posted at
Feb 15, 2026, 1:31 PM
Active
[WTS] Omega Speedmaster Reduced Schumacher 2700$

Omega Speedmaster Reduced Schumacher 2700$

Omega - 3510.12 · $2,700
The Omega Speedmaster Reduced features a striking yellow dial and a 39mm case, one of the most wearable Speedmaster sizes.

  • Condition: nice condition with no noticeable wear signs
  • Case size: 39mm
  • Movement: automatic
Posted at
Feb 15, 2026, 12:25 PM
Active
[WTS] Omega Speedmaster - Dark Side of the Moon Vintage Edition - RARE

Omega Speedmaster - Dark Side of the Moon Vintage Edition - RARE

A rare Omega Speedmaster Dark Side of the Moon Vintage Edition with a black ceramic case and coaxial movement.

  • Condition: Nearly perfect
  • Case Diameter: 44mm
  • Lug To Lug Length: 49mm
  • Watch Weight: 99 grams
Posted at
Feb 15, 2026, 10:50 AM
Active