Case material: White gold; Charge: Automatic; Conditions: New Presentation condition : With boxes and all papers; Model: Quadrato Dual Time Perpetual Price on request Gmtbroker Reference: 320-90-8m/91 Ulysse Nardin 320-90-8m/91 Complete Details: New to the Ulysse Nardin Perpetual Calendar series - with a substantial Bold Square Case. This watch features: Polished and brushed 18kt white gold case. Brushed and polished 18kt white gold bracelet with rotating black ceramic bars between the center links. Silver dial with a horizontal linear pattern. Silver-toned faceted index hour markers and blue Arabic numerals for the 12 and 6. Blue skeletonized hands filled partially with luminescence do not intefere with reading the dial. Perpetual calendar complication with day/date/month/year displays. GMT/second time zone with a blue arrow-head hand pointing to the hour indicators in the dark rim around the dial. Small seconds sub-dial located at the 9 o'clock position. Automatic movement with an approximate power reserve of 45 hours. This is one of the only perpetual calendar complications that allow the date to be quick-set forward and backwards.   Featured Complications: Perpetual Calendar | GMT Time Zone This watch is also known as 320908m91