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

Current Listings

Omega Speedmaster premoon 105.012- 66CB Serviced

Omega - 105.012- 66CB · $8,900

This pre-moon Speedmaster features an original dial with tritium intact and a great bezel with minimal wear. The case has sharp edges and clear polished and brushed parts.

Condition: Serviced, good condition with original parts and slight wear on the dial and hands
Movement: 321 movement
Caseback: Spiralwinder display caseback

Posted at

May 1, 2025, 9:11 AM

Active

View listing on r/WatchExchange

New 2025 Omega Speedmaster Moonwatch Professional Hesalite Black Dial Full 4/25 Ref: 310.30.42.50.01.001

Omega - 310.30.42.50.01.001 · $5,799

This Omega Speedmaster Moonwatch Professional features a black lacquered dial and is powered by the manual-winding 3861 movement.

Condition: 10/10, Unworn with stickers
Movement: Manual wind
Diameter: 42mm
Water resistance: 50M

Posted at

May 1, 2025, 9:01 AM

Active

View listing on r/WatchExchange

Omega Speedmaster Apollo 17 45th Anniversary (2-yr warranty) Ref: 311.30.42.30.03.001

Omega - 311.30.42.30.03.001 · $8,200

The Omega Speedmaster Apollo XVII is a limited edition timepiece commemorating the 45th anniversary of the final moon landing in 1972. This watch features a polished blue ceramic bezel with tachymeter scale, a dial with 18K yellow gold indexes and hour-minute hands coated in Super-LumiNova, and an engraved caseback.

Condition: Very good
Case size: 42mm
Water resistance: 50 meters / 167 feet
Movement: Manual-Winding Chronograph

Posted at

May 1, 2025, 8:44 AM

Active

View listing on r/WatchExchange

Omega Speedmaster Automatic Triple Calendar Chronograph 3220.50 $2199

Omega - 3220.50 · $2,199

A beautiful Omega Speedmaster 3220.50 Triple Calendar Chronometer Chronograph with a 40mm steel case and Valjoux 7751 based automatic movement.

Case size: 40mm
Movement: Valjoux 7751 based automatic
Crystal coating: AR coated sapphire

Posted at

May 1, 2025, 5:41 AM

Active

View listing on r/WatchExchange

Omega Speedmaster Moonwatch White Dial (310.30.42.50.04.001)

Omega - 310.30.42.50.04.001 · $6,950

This Omega Speedmaster Moonwatch features a white dial and is sold with its original boxes, papers, warranty card, pictogram card, and Master chronometer certificate.

Condition: Mint condition
Accessories included: boxes, papers, warranty card, pictogram card, Master chronometer certificate

Posted at

Apr 30, 2025, 10:55 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Reduced Two Tone

Omega - 3714.20.80 · $2,500

A rare two-tone Omega Speedmaster Reduced, in overall good condition for its age, with a white dial and 18k gold bezel.

Condition: good condition with some wear on the case and bezel
Movement: Cal 1140
Size: 39mm diameter
Case material: two tone

Posted at

Apr 30, 2025, 8:55 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Day Date 3521.30 1800$

Omega - Speedmaster Day Date 3521.30 · $1,800

Posted at

Apr 30, 2025, 5:58 PM

Active

View listing on r/WatchExchange

1997 Omega Speedmaster Professional Gemini V (Ref. 345.0022)

Omega - 345.0022 · $8,999

The Omega Speedmaster Professional Gemini V Watch commemorates the NASA Gemini V mission, featuring a unique 9 o'clock sub-dial with the mission patch and a limited release of 150 models.

Condition: Excellent/like new
Case size: 42mm diameter
Bracelet type: Omega 1499 with 842 end pieces
Box papers status: Original inner/outer boxes and booklets present

Posted at

Apr 30, 2025, 4:57 PM

Active

View listing on r/WatchExchange