Overview
The “Sapphire Sandwich” Moonwatch is famed for having both front and back sapphire crystals, revealing the hand-wound movement inside. It unites classic NASA heritage with modern, scratch-resistant construction.
Product Image
(Image copyright Omega)
Official Description
This updated Speedmaster Professional combines the classic black dial and hesalite-bonded look with a sapphire front crystal, and exhibition caseback for movement lovers to admire the mechanical beauty inside.
Product Specifications
| Feature | Value |
|---|---|
| Model Number | 310.30.42.50.01.002 |
| Series | Speedmaster Professional Moonwatch |
| Case Material | Stainless steel |
| Case Diameter | 42 mm |
| Case Thickness | 13.2 mm |
| Crystal | Sapphire, front and rear |
| Bracelet/Strap | Steel bracelet |
| Water Resistance | 50 meters |
Movement Details
| Specification | Value |
|---|---|
| Movement | OMEGA Caliber 3861 (manual-wind) |
| Type | Manual-wind chronograph |
| Power Reserve | 50 hours |
| Magnetic Resistance | 15,000 gauss |
| Features | Small seconds, 30-min + 12-hr counters, exhibition caseback |
Frequently Asked Questions
Can I view the movement?
Yes, via the exhibition (sapphire) back.
Is the movement the same as standard Moonwatch?
Yes, Caliber 3861 manual chronograph.
Is this NASA-certified for EVA?
No, only the Hesalite version is NASA flight-qualified, but both are mechanically identical.
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