Omega Speedmaster Professional 311.30.42.30.01.006 Sapphire Sandwich, 31130423001006, 'First Watch Worn on the Moon', stainless steel on a stainless steel bracelet, manual wind movement, chronograph, black dial, water resistant to 100ft, sapphire crystals front and back, latest edition with commemorative box set with accessories (including two addition straps), Diameter: 42mm, Thickness: 14mm, Unworn with box and papers