Having been part of all six lunar missions and endorsed by NASA as the first watch on the moon, the legendary Speedmaster family represents Omegas adventurous, pioneering spirit. Providing flawless performance and exceptional style, this Omega Speedmaster Professional Mens Moonwatch features a black dial set within a reliable 42mm stainless steel case and a black bezel complete with tachymeter scale. The high precision dial plays host to a small seconds sub-dial, a 30-minute sub-dial, a 12-hour sub-dial and a central chronograph hand, all protected by a hesalite crystal lens. Secured with a black alligator leather strap and water resistant to 50 metres, this confident watch is powered by mechanical calibre 1861 manual-winding movement. FEATURESChronograph: The chronograph function is a mechanism for measuring time intervals. A chronograph watch can therefore be used to time events while displaying the time like any traditional watch. Small Seconds: A hand on a sub-dial which tracks s