Designed to be both a lightweight timepiece for athletes and a casual, everyday sports chronograph, the Endurance Pro perfectly blends innovative technology with a vibrant design to produce the ultimate athleisure watch. The Endurance Pro features an ultra-light Breitlight® case, a robust material 3.3 times lighter than titanium and 5.8 times lighter than stainless steel. Non-magnetic, thermally stable and hypoallergenic, Breitlight® is highly resistant to scratches, traction and corrosion. Powered by Breitling’s Caliber 83, COSC-certified SuperQuartz™ chronograph delivering exceptional precision.X83310D41B1S1