Omega Speedmaster Moonwatch Professional 310.30.42.50.01.004 - Pre-Owned

A certified pre-owned collector's timepiece of extraordinary prestige, the Omega Speedmaster Moonwatch Professional 310.30.42.50.01.004 - Pre-Owned showcases the pinnacle of Swiss haute horlogerie. Mastercrafted by legendary atelier Omega, this timepiece features a High-Tech Ceramic case, 42mm and is powered by a Swiss Hand-Wound Mechanical Movement. Independently inspected, tested for amplitude, and authenticated by our master watchmakers at CJ Charles Jewelers.

Timepiece Highlights & Technical Specifications

• Maison / Brand: Omega
• Collection: Seamaster
• Model Reference: er
• Case Material: High-Tech Ceramic
• Case Dimensions: 42mm
• Dial: Blue Dial
• Movement: Swiss Hand-Wound Mechanical Movement
• Condition: Certified Pre-Owned (Thoroughly Tested, Polished & Regulated to Mint Condition)
• Inclusions: Complete Set: Original Box & Papers Included

Horological Legacy & Wrist Presence

A rugged yet refined aquatic tool watch that has defined modern horology. Designed to withstand demanding adventures while gliding seamlessly beneath a tailored cuff for formal occasions.

Manufacturer & Technical Details

"CASE 42mm Stainless steel Fixed stainless-steel bezel with black ceramic insert and white-enamel tachymeter scale Water Resistance: 5 ATM (50 meters) MOVEMENT Manual-winding, Omega Co-Axial Master Chronometer Caliber 3861 Approximately 50-hour power reserve FUNCTIONS Hours, minutes, small seconds, central chronograph seconds, 30-minute and 12-hour chronograph counters, tachymeter DIAL Black lacquered step dial with contrasting white subdials and Super-LumiNova hands and hour markers STRAP Polished and brushed stainless-steel bracelet with folding clasp and comfort-adjustment system. COMES WITH Box & Papers. 2026 Please refer to our photos to view the condition of this watch. Our photos were taken under harsh light to reveal any noticeable scratches and imperfections. Please ask if you have any questions before purchasing. Established in 1988, located in La Jolla, California, CJ Charles Jewelers is an authorized dealer for the world's finest watch brands. Our on-site service center is staffed by expert watchmakers. 100% Authentic items only. All pre-owned watches are rigorously examined before sale. CJ Charles Jewelers guarantees all previously owned watches for authenticity. All watches come with a 12-month CJ Charles guarantee. Not Affiliated with Rolex USA"

The CJ Charles Jewelers Horology Promise

Serving luxury watch collectors in La Jolla, San Diego and worldwide since 1988, CJ Charles Jewelers is an authorized retailer and specialist in Swiss haute horlogerie. Every pre-owned timepiece is thoroughly inspected, timed on digital vibrograf machines, and certified by our in-house master watchmakers. Your timepiece arrives in our signature luxury gift packaging, backed by complimentary fully insured white-glove shipping and dedicated concierge support.

Specifications above are taken directly from this piece's catalog data.

Complimentary insured shipping on every U.S. order — no minimum, no code. We ship via UPS Ground, FedEx Home Delivery, USPS Priority, fully insured, with signature confirmation on high-value pieces.

Free 30-day returns: unworn pieces in original packaging can be returned within 30 days of delivery for a full refund — we email you a prepaid, insured return label.

Full shipping policy · Full returns policy

Every piece we sell is guaranteed genuine — inspected before dispatch, with serial numbers intact and documentation as described. If any piece were ever proven otherwise, we refund you in full.

Read our Authenticity Promise