The Speedmaster, a lasting classic, is characterized in its current iteration by a 40mm case and an automatic chronograph movement with full calendar (caliber 3606 based on Valjoux 7751). For reference 3221.30.00, the stainless steel case and bracelet extend to the tachymeter ring.
Shape
Round
Lug Distance
19.00 mm
Material
Stainless Steel
Glass
Sapphire
Diameter
40.00 mm
Water Resistance
100.00 m
Dial Color
Silver
Material
Bracelet