With only 300 pieces made

Case: 43 mm diameter

A skeletonised rotor and visible ruby enhance the mechanical depth

its robust construction and 100-metre water resistance support everyday use

An elegantly understated grey sunray dial features 12 sparkling crystal set markers teamed with three-hand movement

Ball Engineer Hydrocarbon AeroGMT II Men's Black Watch Square With only 300 pieces madeThe Engineer Hydrocarbon is the ultimate explorers watch, offering exceptional resistance and exclusive patented innovations. Featuring a triple folding buckle, crown protection, the Amortiser, and SpringLOCK systems, these timepieces are designed to endure the harshest conditions while providing unparalleled precision and reliability. Ideal for adventurers and professionals alike, the Engineer Hydrocarbon collection stands as a testament to Ball's