The Speedmaster Professional reference 311.33.42.30.01.002, launched in 2015, replaces the 3873.50.31. It has a stainless steel case with sapphire crystal front and back, and a leather strap. It comes in the new style box containing a NATO strap, Velcro strap, bracelet-changing tool, and a book about Speedmaster adventures.
Shape
Round
Lug Distance
20.00 mm
Material
Stainless Steel
Glass
Sapphire
Diameter
42.00 mm
Water Resistance
50.00 m
Dial Color
Black
