The 42.2 mm stainless steel case is constructed with a mix of satin-brushed surfaces and polished bevels, delivering both durability and refined finishing. Its black embossed dial features the signature Aquanaut pattern, enhanced by vivid orange chronograph hands and minute scale for improved timing visibility. At the core is the self-winding Caliber CH 28-520 C, a flyback chronograph movement equipped with a column wheel and vertical clutch system, allowing seamless restart without stopping the chronograph. Operating at 28,800 vibrations per hour, it provides stable precision and a power reserve ranging between 45 and 55 hours. The sapphire crystal case back reveals fine finishing details including Geneva stripes and a 21k gold rotor. Water resistance is rated to 120 meters, supported by a screw-down crown and a composite tropical strap designed for resistance to wear, UV exposure, and moisture.

What distinguishes this reference is its assertive character. The integration of vibrant accents into a traditionally restrained manufacture introduces a new visual energy while maintaining mechanical seriousness. It is a sports chronograph built for real-world use, yet executed with the discipline and finishing standards expected from Patek Philippe.