Endurance Pro 44mm Co-axial steel crown set with a

steel crown set with a faceted black synthetic spinel

With reinforced eyelet holes at the sides

and highlighting the richness of watchmaking expertise

the dial has three levels of finishing that bring depth and contrast to the model: an internal bezel with an opaline finish

the Mark XX adapts effortlessly to any setting

Endurance Pro 44mm Co-axial steel crown set with aTHE STORY This Breitling Endurance Pro 44mm is 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. Featuring an ultra light Breitlight case, a robust material 3. 3 times lighter than titanium and 5. 8 times lighter than stainless steel, the non magnetic, thermally stable and