Black enamel dial with silver-tone hands and Arabic numeral hour markers, featuring a tachymeter scale on the outer rim. Analog display powered by Patek Philippe Calibre CHR 29-535 PS Q hand-wound movement containing 34 jewels and composed of 496 parts; beats at 28800 vph with approximately 65-hour power reserve. Includes perpetual calendar, chronograph functions (two sub-dials for seconds and minutes), moon phase indicator, leap year functionality, date, day, month, hour and minute displays. Fixed silver-tone platinum bezel in a 41 mm diameter round case of silver-tone platinum material with thickness measuring 13.56 mm. Secured by a black alligator leather strap. Protected by sapphire crystal for scratch resistance. Open transparent case back. Water resistant up to 30 meters / 100 feet depth.
![Patek Philippe NAUTILUS Automatic Blue Dial Unisex Watch [ref]5711-1A-010[/ref]](https://cdn.lepodium.net/images/000/087/87561-2.jpg)
