Omega Speedmaster 311.30.42.30.01.001

The reference 311.30.42.30.01.001 represents Omega's Speedmaster Professional Moonwatch within the Moonwatch series. This particular reference features the traditional manual winding movement configuration that defines this model line. The 42mm stainless steel case houses a manual movement and displays time through a black dial protected by Hesalite crystal. The watch incorporates a fixed tachymeter bezel and offers 50 meters of water resistance. The case construction and movement specification maintain the fundamental characteristics associated with this model designation. This reference appeals to collectors seeking the standard Speedmaster Professional configuration with traditional materials and specifications. The combination of manual movement, Hesalite crystal, and black dial represents the core specification set within the Moonwatch series, positioning this reference as a representative example of the model's fundamental design approach.