Patek Philippe Aquanaut Midsize Automatic Steel Watch 5066 is a sophisticated timepiece designed for men. It features an automatic movement with rhodium-plated fausses cotes decoration, a straight-line lever escapement, Glucydur Gyromax balance, shock absorber, self-compensating free-sprung flat balance spring, and a 21K gold rotor. The watch has 30 jewels and operates on Caliber 330/194. Its cushion stainless steel case measures 36.0 mm and has a transparent case back, allowing a view of the movement. The scratch-resistant sapphire crystal protects the embossed tapisserie layout black dial with Arabic numerals, luminous hands and baton hour markers, a center sweep seconds hand, and a date calendar window at 3 o'clock. The stainless steel bracelet with a deployment clasp ensures a secure fit for a 7 1/4" wrist.