Aluminum is naturally strong and lightweight. It's the ideal material for Apple Watch Sport. Our engineers have custom designed a new alloy. It is 60% stronger than standard alloys, but just as light. This requires precision alloying. Raw aluminum of exceptional purity is first heated to a molten state. Tightly controlled amounts of magnesium and zinc are then added. As these elements bind together, they form a protective compound that strengthens the metal. The alloy is then poured, jet-cooled and cast. A high temperature treatment minimizes uneven chemistry in the billets and ensures proper grain structure. Next, a finely tuned extrusion process creates a uniform surface free of defects. After being meticulously formed, each case is machined, buffed, and then textured with microscopic zirconia beads to achieve a consistent, satin finish.
