The bulova lunar pilot brings the past to the present with a design from space exploration history, perfect for the modern adventurer. 43. 5mm sandblasted silver-tone grade 5 titanium case with polished accents six-hand chronograph dial is crafted from genuine 4. 5-billion-year-old muonionalusta meteorite, making every dial unique black tachymeter ring, luminescent hands and markers, three chrono dials, flat sapphire crystal powered by bulova’s proprietary high precision quartz movement the fitted black leather strap with buckle clasp features an easy release system for quick changes limited to 5,000 pieces; presented with a storybook, limited edition card, and certificate of authenticity