IWC Schaffhausen Aquatimer Perpetual Calendar Digital Date-Month Edition "50 Years Aquatimer"

The IWC Aquatimer Perpetual Calendar Digital Date-Month Edition "50 Years Aquatimer", reference IW379403, is a chronograph with a 49 mm Ceratanium case. This special edition has a perpetual calendar; the case is 19.4 mm thick and has a screw-down crown. Calibre 89802 is self-winding and has a 68-hour power reserve and 51 jewels. The black dial has a large double-digit date display, small hacking seconds and a flyback function under convex sapphire glass. The watch has a black rubber strap. The case carries a water-resistance rating of 100 metres. The calibre has an operating frequency of 28,800 vibrations per hour.