IWC IW371433 Super Slim Portuguese “Dragon” limited edition special edition. 40.9mm diameter. It took up to 18 months to overcome many difficulties to develop and replicate the genuine A79350 movement. The improvement achieved by using the improved movement is one. The thickness of the case is 13.5mm before the original match (only 12.3 mm) because of the limitation of the thickness of the 7750 movement. Two, the head and the upper and lower timing buttons are parabolic. (Before it was a vertical line) After the improvement, the whole is more coordinated and perfect. 100% restore the authentic and elegant demeanor. Third, the assembly sequence and structure of the three-piece ring, middle shell, and bottom cover are consistent with the original product (all are fixed by screws). IW371433 has a low density and no flaws. Because of hard work, so professional.