LIMITED & NUMBERED EDITION OF ONLY 100 PIECES WORLDWIDE! 18kt rose gold case with brushed finished sides & polished finished bezel & lug tops. Silver dial. Sub-dials with a fine concentric circle finish perimeter. Applied darkened polished index & luminous dot hour markers. Darkened polished hands, hour & minute hands with luminous fill. Fine printed minutes/seconds & fractions of a second track. Perpetual Calendar: Calendar features displayed in Arabic numerals via windows in the dial - hence the name INGENIEUR PERPETUAL CALENDAR DIGITAL DATE-MONT. Date window displayed located at the 9 o'clock position. Month window displayed located at the 3 o'clock position. Leap-year display window at the 6 o'clock position. Chronograph/Stopwatch functions: Flyback feature allows for instant restarting of the chronograph with a single push of the button instead of the need to stop, reset & restart the stop-watch. Large central seconds counter hand. The chronograph sub-dial at the 12 o'clock position doubles as both the chronograph 60 minute counter, allowing for an easy & instant reading of the stopwatch.