IWC has no annual calendar watch, IWC Portuguese annual calendar steel watch IW503501 make up the gap between the IWC’s perpetual calendar and simple date display.44.2 mm stainless steel case and silver-plated dial, with three separate semicircular windows display the month, date and day of week, respectively, and its switching mechanism has been automatically take into account the different number of days each month. The calendar is different, different calendar without regard to the number of days in February, does not consider the effect of leap year, hence the need for a manual adjustment at the end of February each year, just to pass the crown to adjust, simple and convenient.
Stainless steel screw-gear of the crown, the Portuguese series has always been the crown molding, crown engraved brand top English Logo. Simply adjust the calendar by the crown. To promote the movement of the hour wheel date wheel advance. Date propulsion wheel has two different propulsion pointer, wherein the one responsible for promoting the date and month, another one in charge of day display. Whenever midnight, with the advance pointer over the date of the conversion can be realized. Month display and adjust the length of the month is set by the date wheel disc two pin control. The first root pin display panel on the advance setting wheel rotate a grid. Promoting rod by means of a stylus wheel set on a deep incision Identification 30 days of the month, which is set for a longer switching routes. As a result, the double conversion by the next day before the date of the pusher can be achieved.
Black crocodile leather strap, texture neat, black hand-stitching, more refined. Solid steel folding clasp, easy to wear, brushed and engraved clasp handle IWC brand logo, no change of place.
Double-sided anti-reflective sapphire glass arched edge, silver-colored dial. Small three-pin design, 3 o’clock position is located on the 7th slot power reserve display small navy blue hands, small seconds at 9 o’clock position navy blue small seconds disc. Minute scale foreign aid orbital position and Arabic numeral hour-bit display. Layout and tidy, very convenient to read the time and date.
Calendar display design simple and neat, with three separate semicircular window display were the month, day and week, provided between 11:00 to 1:00 scale. Cal.52850 equipped with the new self-winding movement, no fine-tuning meter Glucydur® balance wheel, put on a wheel rim with a fine-tuning screws and Breguet balance spring, oscillating weight decorated with 18k gold badge. The movement is equipped with two barrels provide more torque to drive three displays disc. In addition, double barrel also provided for the watch 7 days power reserve.