Omega
Omega Speedmaster Professional Moonwatch (Sapphire Sandwich) 3573.50.00
“Sapphire Sandwich”
The Omega Speedmaster Professional Moonwatch (Sapphire Sandwich) (reference 3573.50.00) is a 42 mm stainless steel watch with a black dial. It runs on the manual caliber 1863 with a 48-hour power reserve and is water resistant to 50 m. It was made from 2002 to 2014.
Specifications
Case
- Reference
- 3573.50.00
- Nickname
- Sapphire Sandwich
- Collection
- Speedmaster
- Case size
- 42 mm
- Case material
- Stainless steel
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 50 m
- Bracelet / strap
- Stainless steel bracelet
Dial and bezel
- Dial
- Black
- Bezel
- Tachymeter (black aluminium)
Movement
- Movement
- Manual
- Caliber
- 1863
- Power reserve
- 48 hours
- Frequency
- 21,600 vph
- Jewels
- 18
- Functions
- Chronograph, Small seconds, Tachymeter
Production
- Production
- 2002–2014
How it compares within the Speedmaster family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 3573.50.00 (This watch) | 42 mm | Stainless steel | Black | 1863 | 2002–2014 |
| 310.30.42.50.04.001 | 42 mm | Stainless steel | White | 3861 | 2024– |
| 310.92.44.50.06.001 | 44.25 mm | Grey ceramic | Grey (skeletonised) | 3869 | 2025– |
| 310.92.44.50.06.002 | 44.25 mm | Grey ceramic | Grey (skeletonised) | — | 2025– |
| 318.90.45.79.01.003 | 45 mm | Titanium | Black | 5622 | 2022– |
| 332.10.41.51.01.001 | 40.5 mm | Stainless steel | Black | 9906 | 2022– |
| 332.10.41.51.03.001 | 40.5 mm | Stainless steel | Blue | 9906 | 2022– |
| 522.30.38.50.04.001 | 38 mm | Stainless steel / ceramic | White | 3330 | 2025– |
| 522.30.38.50.04.002 | 38 mm | Stainless steel / ceramic | White | 3330 | 2025– |
About the Speedmaster family
The Speedmaster was introduced in 1957 as a sports chronograph with the tachymeter scale on the bezel. It passed NASA's tests in 1965 and was worn on the Moon in 1969, which is why the hand-wound Professional is known as the Moonwatch. Its movement has gone from the caliber 321 to the 861 and 1861, and in 2021 to the Master Chronometer 3861.
Around the Moonwatch the line includes the Speedmaster Racing, the ceramic Dark Side of the Moon, automatic chronographs, the smaller Speedmaster 38 and many special editions. Dealers check the caliber, the crystal (Hesalite or sapphire), the caseback engraving and the reference, and on vintage pieces look closely at dial, bezel and hands.
Quick answers
- What size is the Omega Speedmaster Professional Moonwatch (Sapphire Sandwich) 3573.50.00?
- The Omega Speedmaster Professional Moonwatch (Sapphire Sandwich) 3573.50.00 has a 42 mm case.
- What movement does the Omega Speedmaster Professional Moonwatch (Sapphire Sandwich) 3573.50.00 use?
- It uses the manual caliber 1863, with a 48-hour power reserve.
- How water resistant is the Omega Speedmaster Professional Moonwatch (Sapphire Sandwich) 3573.50.00?
- It is water resistant to 50 metres.
- Is the Omega Speedmaster Professional Moonwatch (Sapphire Sandwich) 3573.50.00 still in production?
- No. It was made until 2014.
- When did the Omega Speedmaster Professional Moonwatch (Sapphire Sandwich) 3573.50.00 come out?
- It was introduced in 2002 and made until 2014.
- What is the Omega Speedmaster Professional Moonwatch (Sapphire Sandwich) 3573.50.00 made of?
- The case is stainless steel. Bracelet or strap: Stainless steel bracelet.
- What is the Omega Speedmaster Professional Moonwatch (Sapphire Sandwich) 3573.50.00 nicknamed?
- Dealers and collectors call it the “Sapphire Sandwich”.
Catalog facts checked September 2026.