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Speedmaster Professional Moonwatch Big Box / Sapphire

The Speedmaster Professional ref: 311. was launched in 2015 as a replacement for the 3873.50.31. It features a stainless steel case with sapphire front and back and a leather strap. It is delivered with the new style box which contains a "NATO" strap, Velcro strap, a tool to change the bracelet and a book highlighting Speedmaster's adventures. Luxury version of the 1861. Replacement for the 863.

Model nr. 311.
Brand Omega
Collection/Family Speedmaster
Gender Men's
Type Manual Winding
Caliber 1863
Beats per Hour 21600 bph
Power Reserve 48 h
Crown Position 03:00
Case Width (mm) 42
Case Shape Round
Case Material Stainless steel
Case Back Open
Case Lug Width (mm) 20
Crystal Material Sapphire
Water Resistance (meters) 50
Moonphase No
Time Types Hours, Minutes, Small Seconds
Cronograph Chronograph
Band Material Leather
Band Color Black
Dial Color Black
Hour Markings Stick and Dot
Bezel Function Fixed
Bezel Material Stainless Steel
Bezel Color Black
On the Bezel Tachymeter