Omega Speedmaster Speedmaster Professional Moonwatch Sapphire Sandwich / Strap
Reference 3873.50.31
About this watch
The Omega Speedmaster Professional Moonwatch Sapphire Sandwich, also known as the 3873.50.31, is a testament to the brand's rich history and commitment to precision. This luxury watch features a stunning black dial with contrasting white stick and dot indexes, giving it a classic yet modern vibe suitable for both formal and casual occasions. The round stainless-steel case strikes a perfect balance between presence and elegance, measuring 42mm in diameter. A sapphire crystal on both the front and back of the watch enhances durability and provides a stunning view of the intricate movement through the open case back. With its iconic design, reliable Omega caliber 1863 movement, and versatile wearability, this watch earns its place in any collection. Whether you're a history buff, a watch connoisseur, or someone looking to elevate your style, the Speedmaster is a worthy companion. It's not just about telling time; it's about cherishing every moment.
Key Features
- Omega caliber 1863 movement
- 48-hour power reserve
- 21,600 vibrations per hour
- Chronograph function for timing events
- Sapphire crystal on front and back of the watch
- Water resistance up to 50 meters
- Leather strap with secure buckle
Specifications
- Brand
- Omega
- Family
- Speedmaster
- Model
- Speedmaster Professional Moonwatch Sapphire Sandwich / Strap
- Reference
- 3873.50.31
- Movement
- 1863
- Movement Features
-
- Hours, Minutes, Small Seconds
- Chronograph
- Case
- Stainless Steel 42mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 50
Current Listings
![[WTS] 2024 Omega Speedmaster Moonwatch Sapphire REF 31030425001002 Full kit (Box, Papers, Extra links)](https://preview.redd.it/gpo51d4wrdxf1.jpg?width=640&crop=smart&auto=webp&s=5f803b7ad296831add7b5cf7aab44c78019ab6b9)
2024 Omega Speedmaster Moonwatch Sapphire REF 31030425001002 Full kit (Box, Papers, Extra links)
2024 Omega Speedmaster Moonwatch Sapphire in excellent condition, barely worn, and well-kept. Includes full box, papers, extra links, and owners manual.
- Condition: Pre-owned (2024 piece, well kept and in amazing condition)
- Year: 2024
- Included Accessories: Full box, papers, extra links, owners manual
![[WTS] Omega Speedmaster3590.50 – Unpolished Classic](https://external-preview.redd.it/bq19TQDHXIiNf5PqsKkLb8n4nt9gn3Qk4YrXYTBjuAQ.jpg?auto=webp&s=d7e492d8509072c3900b10b7a0f6c5a110b0e814)
Omega Speedmaster3590.50 – Unpolished Classic
a classic, unpolished Omega Speedmaster with a unique character
- Material: steel
- Band: leather strap
![[WTS]: Omega Speedmaster Professional Moonwatch Full kit 12/24](https://preview.redd.it/ye5ukg4ffcxf1.jpeg?auto=webp&s=cb23bef97030d18d2120d4f5750656cf53e778b9)
: Omega Speedmaster Professional Moonwatch Full kit 12/24
This Omega Speedmaster Professional Moonwatch Hesalite is a full kit in very good condition. It features a Hesalite crystal and comes with a warranty card dated 12/24.
- Condition: Very nice shape, small marks and scratches
- Warranty card date: 12/24
- Shipping method: FedEx
![[WTS] Omega Speedmaster. Moonwatch. 3570.50. Strong Lume.](https://preview.redd.it/ihv0zylmubxf1.jpeg?auto=webp&s=811e6bb2aa5c79c6bc05e2035f360a813519fe8e)
Omega Speedmaster. Moonwatch. 3570.50. Strong Lume.
This is an Omega Speedmaster Moonwatch, a model known for its strong lume and moon phase display.
- Lume strength: strong
- Shipping: Fedex with insurance
- Location: NJ USA
![[WTS] Omega Speedmaster 3590.50](https://preview.redd.it/srw2wa1vfbxf1.jpg?width=640&crop=smart&auto=webp&s=164344a75333fedb27704734538fff09287a1646)
Omega Speedmaster 3590.50
- Gender: men's
- Water Resistance: 30m
![[WTS] Omega Speedmaster Reduced 3510.50 (EUROPE 🇪🇺)](https://preview.redd.it/bl8yfgs5waxf1.png?width=640&crop=smart&auto=webp&s=dec7932190098908c6ee4a9c6b9c951752b28564)
![[WTS] Omega Speedmaster $4,511 BRAND NEW](https://preview.redd.it/e8erriee4axf1.jpg?width=640&crop=smart&auto=webp&s=de60edbe8bd23609db8e4790a7635a7555ce6468)
Omega Speedmaster $4,511 BRAND NEW
This is a brand new Omega Speedmaster watch. It's a classic design that exudes style and sophistication.
- Condition: Brand New
![[WTS] Omega Speedmaster Professional Hesalite - Weeks Old! 310.30.42.50.01.001](https://preview.redd.it/mwb21nihw9xf1.jpg?width=640&crop=smart&auto=webp&s=44747b3fbbb28fce8f3f2e43f30f8ef2f31a2afe)
Omega Speedmaster Professional Hesalite - Weeks Old! 310.30.42.50.01.001
This Omega Speedmaster Professional has been purchased brand new within the past month and comes with full set, boxes, papers, and warranty.
- Condition: Like new, consistent with about a week of total wear
- Warranty: 10/25 warranty
![[WTS] Omega Speedmaster Dark Side of the Moon Vintage Black Full Set 311.92.44.51.01.006 - $8,195](https://preview.redd.it/0xppa3ztt9xf1.jpg?width=640&crop=smart&auto=webp&s=d965ea62f3c3a7894196d4597a51b2a764148f8e)
Omega Speedmaster Dark Side of the Moon Vintage Black Full Set 311.92.44.51.01.006 - $8,195
This Omega Speedmaster Moonwatch, part of the Dark Side of the Moon collection, features a Vintage Black design.
- Condition: Excellent condition with minimal signs of wear
- Year: 2022
- Contents: Watch,Inner & Outer Box,International Warranty Card,Pictograms Card,Card Holder,Operating Instructions Manual,Omega Travel Box
- Condition Details: Strap is relatively new (purchased 4/27/25), Inner box has some wear