This Omega is 42 mm stainless steel case, transparent back, tachymeter bezel, scratch-resistant sapphire crystal with anti-reflective treatment on both sides, black dial, manual-winding Omega 1863 movement with chronograph and small seconds (original movement that was worn on the moon), approximately 48 hours of power reserve, black leather strap with extra NATO and Velcro straps. Water resistant to 50 m.