This year at Baselworld 2015, we saw the largest number of watches with blue dials. One of our favorite timepieces presented this year by Patek Philippe is the Annual Calendar Chronograph ref. 5905P-001 in platinum. This new watch available in two dial variations —blue or black— is a well balanced perfectly designed watch with a 42 mm case in 950 Platinum. Annual Calendars are one of our favorite complications as you get a lot of watch for your money. The Annual Calendar mechanism automatically takes into account the differing lengths of individual months. Unlike a perpetual calendar, however, the annual calendar is unable to factor in the differing length of the month of February or the leap years. Once a year, then, at the end of February, it requires manual correction. To make things even better, the new Patek Philippe ref. 5905P additionally features a convenient 60-minute chronograph at 6 o'clock —with built-in day/night indicator—, while the annual calendar information is displayed via three apertures between 10 and 2 o'clock. This new watch is fitted with a strikingly beautiful blue sunburst dial, that is a true chameleon depending on the lighting conditions.

Its dial varying all the way from navy electric blue to midnight blue and everything in between, is accentuated by its white gold applied hour markers and its white font and minute track. See for yourself in the pictures below, how much the dial color varies depending on the light source.

The beating heart inside the Patek Philippe Annual Calendar Chronograph ref. 5905 is the automatic calibre CH 28-520 QA 24H fully visible via the display case back. This exceptional movement composed of 402 parts, 37 jewels and a full-size rotor, has a diameter of 33 mm and provides a power reserve of 55 hours when fully wound.

This new Patek Philippe ref. 5905P is fitted on a gorgeous matte navy blue hand-stitched alligator strap with square scales and prong buckle. The strap completes the elegant, yet sporty look of this watch.

On the wrist, what can we tell you? This is a Patek Philippe in all its glory. The watch wears true to its size and with an impeccable wrist presence. This is a Patek that will for sure become an icon within the Complications line-up for the brand.

Sticker Price $78,200 USD. For more info on Patek Philippe click here.