Omega SPEEDMASTER PROFESSIONA CHRONOGRAPH 3570.50

The 3570.50 represents Omega's Speedmaster Professional in stainless steel configuration with manual wind movement. This reference sits within the core Speedmaster Professional series, distinguished by its black dial and traditional case proportions. The watch features a 42mm stainless steel case with fixed bezel and black dial. Water resistance extends to 30 meters or 100 feet. The timepiece operates on a manual wind movement requiring regular winding by the wearer. This reference appeals to collectors seeking a straightforward Speedmaster Professional execution without complications or additional features. The combination of stainless steel construction, manual wind movement, and black dial represents the essential characteristics of this model line. The 30-meter water resistance positions this as a dress or casual timepiece rather than a tool watch for aquatic activities.